Computer Parts & Components Dealers

(14263 products available)
  • CONTROL PRINT ALFAJET MOTHERBOARD

    CONTROL PRINT ALFAJET MOTHERBOARD

    65,000 - 66,000 Per piece

    • Condition: New
    • Application: Printer Use
    • Type: Printer Parts
    • Country of Origin: India

    we are prominent  trader,supplier and exporter of spare partsin india supplying also supplying  all consumables of hitachi,imaje,domino,willetalfajet main filter ,solvent filter etc

    more..
  • 4 USB and 4 Socket Extension Board

    4 USB and 4 Socket Extension Board

    449 Per Piece

    50 Piece (MOQ)

    • Color: Grey
    • Country of Origin: India
    • Brand Name: Menaso
    • Shape: Hexagonal
    • Number of Socket: 4 Socket
    • Number of USB: 4 USB
    • Power Cord Length: 1.8 m
    • Body Material: Plastic
    more..
  • Best Deals from Computer Parts

  • AMD 7000 Series Ryzen 9 7950X 3D Desktop Processor

    AMD 7000 Series Ryzen 9 7950X 3D Desktop Processor

    65,850 Per Piece

    10 Piece (MOQ)

    • Country of Origin: India
    • Brand Name: AMD
    • Condition: New
    • CPU Model: Ryzen 9
    • CPU Speed: 5.6 GHz
    • No of Threads & Cores: 16 Cores & 32 Threads
    • Base Clock: 4.2 GHz,
    • Max Boost Clock: Up to 5.7 GHz

    AMD 7000 Series Ryzen 9 7950X 3D Desktop Processor 16 cores 32 Threads 144 MB Cache 4.2 GHz Upto 5.7 GHz Socket AM5 (100-100000908WOF)

    more..
  • ERD EB-11 Power Extension Board

    ERD EB-11 Power Extension Board

    600 Per piece

    • Brand Name: ERD
    • Color: White

    Features: 4 Multipurpose sockets 6 Amp. capacity with noise filter 1.5 Meter High quality power cord Premium quality strong & durable ABS cabinet Wall mount brackets for hanging purpose Available in 1.5Meter, 3Meter & 5Meter Power Cord   Compatibility: Television, Laptop, Refrigerator, Mobile Phones, Computer, Music System, Mini Cooler, Iron & Mixer and Many More.

    more..
  • 1SAP240500R0001 DC523 ABB Configuration Digital Input Output Module

    1SAP240500R0001 DC523 ABB Configuration Digital Input Output Module

    19,600 - 20,800 Per Piece

    • Brand Name: ABB
    • Display Type: Digital
    • Frequency: 50Hz
    • Country of Origin: Made In Germany
    • Current Type: DC
    • Condition: New
    • Certificate: CE Certified

    Product ID: 1SAP240500R0001 ABB Type Designation: DC523 EAN: 4016779655989 Catalog Description: Digital input/output module. 24 configurable DI/DO: 24VDC 0.5A. 4 aux. terminals 0 V. 4 aux. terminals 24VDC (DC523)   Product Net Weight: 0.115 kg Product Net Depth / Length: 62 mm Product Net Height: 76 mm Product Net Width: 67.5 mm Gross Weight: 0.139 kg Package Level 1 Depth / Length: 84 mm Package Level 1 Height: 72 mm Package Level 1 Width: 71 mm Package Level 1 Units: 1 carton   Function: 24 configurable DI/DO: 24VDC 0.5A. 4 aux. terminals 0 V. 4 aux. terminals 24VDC Number of Analog Configurable I/Os: 0 Number of Digital Configurable I/Os: 24 Input Voltage Type: DC Input Current: 5 mA Maximum Input Voltage: 0 ... 30 V Delay Time (τ): 0.1 … 32 ms Output: Transistor Output Voltage Type: DC Output Voltage (Uout): 24 V DC Output Current: 0.5 A Output Voltage Maximum: 20.4 … 28.8 V Degree of Protection: IP20 Supply Voltage: 20.4 … 28.8 V DC Ambient Air Temperature: Operation 0 ... +60 °C Storage -40 ... +70 °C

    more..
  • Bitmain S21 Antminer

    Bitmain S21 Antminer

    370,000 - 410,000 Per Piece

    1 Piece (MOQ)

    • Brand Name: Bitmain
    • Size: 195 x 290 x 370mm
    • Weight: 14200g
    • Noise Level: 75db
    • Cooling: 2 Fans
    • Power Consumption: 3500 W
    • Interface: Ethernet
    • Operating Temperature: 5 – 45°C
    • Humidity: 5 – 95%

    Model Antminer S21 (200Th) from Bitmain mining SHA-256 algorithm with a maximum hashrate of 200Th/s for a power consumption of 3550W. Specifications Manufacturer Bitmain Model Antminer S21 (200Th) Also known as Antminer S21 200T Release February 2024 Size 400 x 195 x 290mm Noise level 75db Fan(s) 2 Power 3550W Voltage 12 Interface Ethernet Temperature 5 - 40 °C Humidity 5 - 95 %  

    more..
  • MANO522 Mini ITX Motherboard

    MANO522 Mini ITX Motherboard

    Get Price Quote

    1 Piece (MOQ)

    • Color: Green
    • Application: Desktop
    • Voltage: 12VDC, 24VDC
    • Chipset: Intel® H310
    • CPU: LGA1151 socket 9th/8th gen Intel® Core™ i7/i5/i3 processor (up to 65W)
    • System Memory: 2 x 260-pin DDR4-2666/2400 SO-DIMM, up to 64GB
    • BIOS: AMI
    • Digital I/O: 8-channel in/out programmable
    • Others: Firmware TPM 2.0 (fTPM 2.0)
    • Dimensions: 170 x 170 mm
    • Relative Humidity: 10% to 95% relative humidity, non-condensing
    • Operating Temperature: 0°C to +60°C (+32°F to +140°F)
    more..
  • Panel IPC

    Panel IPC

    Get Price Quote

    1 Piece (MOQ)

    • Material: Metal
    • Application: Industrial Use
    • Weight: 0-2kg
    • Color: Black
    • Feature: Corrosion Resistance, Durable, Flawless Finish
    • Operating temperature: Ambient with air flow from -5°C to 60°C with industrial grade devices

    Intel ® Celeron® processor J1900 Quad Core 2.0GHz (BGA on-board), 15" 4:3 1024x768, 500 cd/m2 2x DDR3L SO-DIMM, 1x 2.5" SSD space, 2x Intel I210IT LAN ports, 1x VGA, 1x Line-out, 2x miniPCIe socket, 1x CFast socket, 1x USB3.0, 2x USB2.0, 2x RS232/422/485, 12~30V DC input. Pre-install One 4G DDR3L SO-DIMM memory.

    more..
  • Universal Multi USB Car Charger Adapter

    Universal Multi USB Car Charger Adapter

    Get Price Quote

    500 Piece (MOQ)

    • Driven Type: Electric
    • Color: White
    • Application: Charging
    • Feature: Usb Car Charger
    • Frequency: 0-500Mhz
    • Country of Origin: India
    • Brand Name: Fast Com
    more..
  • GRAPHICS VIDEO CARD 8VJMK RTX 8000 GPU

    GRAPHICS VIDEO CARD 8VJMK RTX 8000 GPU

    35,000 - 55,000 Per piece

    1 piece (MOQ)

    • Brand: GAMING GRAPHICS CARD
    • Shape: Rectangular
    • Color: Black, Brown
    • Condition: New, Used
    • Application: Graphics Card
    • Feature: Easy To Use, Good In Use, High Performance, High Quality
    • Type: Computer Graphics Cards
    • Warranty: 5yrs

    Nvidia Graphics Card Gigabyte GeForce RTX 4090 GPU 24GB Gaming Desktop Graphics Card Cheap Price second hand and New graphics card mxm2 external mining bitcoin colorful portable  sapphire graphic cards RX mining cards   nvidia geforce 9800gt 512mb ddr3 graphic card external graphic cards  cheap quality used new graphic cards free shipping graphic

    more..
  • Bitumen Expansion Joint Filler Board

    Bitumen Expansion Joint Filler Board

    160 - 1,200 Per piece

    100 piece (MOQ)

    • Country of Origin: India
    • Application: Roads and national high ways, Bridges
    • Color: Natural
    • Feature: Bitumen expansion joint fillers are designed to provide specific features and properties to
    • Hardness: The hardness of bitumen expansion joint filler boards can vary depending on the specific ma
    • Temperature: The temperature of the bitumen expansion joint filler board in a construction applicatio

    Bitumen expansion joint fillers, also known as bituminous joint fillers or asphaltic joint fillers, are materials used to fill expansion joints in various structures, such as bridges, highways, and buildings. These fillers play a crucial role in accommodating movements caused by temperature variations and preventing the ingress of water and debris. Here are some features associated with bitumen expansion joint fillers:1. *Elasticity:*   - Bitumen expansion joint fillers exhibit elasticity, allowing them to deform and accommodate the movement of the joint. This property is crucial for preventing damage to the structure.2. *Water Resistance:*   - Bitumen joint fillers are known for their water-resistant properties. They create a barrier that helps prevent water infiltration into the joint, protecting the underlying structure from water damage.3. *Adhesion:*   - These fillers adhere well to the joint surfaces, ensuring a secure and durable connection. Proper adhesion helps maintain the integrity of the joint over time.4. *Flexibility:*   - Bitumen fillers remain flexible over a range of temperatures, allowing them to adapt to thermal expansion and contraction without cracking or losing effectiveness.5. *Durability:*   - Bituminous joint fillers are durable and capable of withstanding environmental factors, including exposure to sunlight, rain, and temperature extremes.6. *Resistance to Aging:*   - Bitumen expansion joint fillers are designed to resist aging and degradation over time. This helps ensure a longer service life and reliable performance.7. *Ease of Installation:*   - These fillers are generally easy to install, making them suitable for construction projects where efficient installation is essential.8. *Compatibility with Bituminous Surfaces:*   - Bitumen expansion joint fillers are compatible with bituminous surfaces, making them well-suited for use in asphalt pavements and other bituminous structures.9. *Minimal Shrinkage:*   - Bituminous joint fillers typically exhibit minimal shrinkage after installation, helping to maintain a tight seal in the joint.10. *Cost-Effective:*    - Bitumen fillers are often cost-effective compared to some other types of joint fillers, making them a practical choice for various construction projects.11. *Resistance to Chemicals:*    - Bitumen expansion joint fillers can resist the effects of certain chemicals, contributing to their overall durability and performance in harsh environments.12. *Availability in Various Forms:*    - Bitumen expansion joint fillers are available in various forms, including sheets, rods, or pre-molded shapes, providing flexibility for different applications and project requirements.It's important to note that the specific features of bitumen expansion joint fillers can vary based on the product formulation, manufacturing process, and intended application. When selecting a bitumen expansion joint filler, it's advisable to refer to product specifications provided by the manufacturer to ensure that it meets the project's requirements.  

    more..
  • ALIENTECH - KESS 3 SLAVE TOOL ECU and TCU programming via OBD, boot and bench.

    ALIENTECH - KESS 3 SLAVE TOOL ECU and TCU programming via OBD, boot and bench.

    365,000 - 366,000 Per piece

    1 Piece (MOQ)

    • Color: black

    prices depend on your kess3 software protocolsavailable protocolscar – lcv obd protocols activation bike – atv & utv obd protocols activation agriculture – truck & buses obd protocols activation marine & pwc obd protocols activation car – lcv bench-boot protocols activation bike – atv & utv bench-boot protocols activation agriculture – truck & buses bench-boot protocols activation marine & pwc bench-boot protocols activation  alientech kess 3 hardware alientech kess 3 hardware. the new kess3 tuning tools from alientech. kess 3 is an obd and bench tuning / boot tuning and ecu remapping tool. the super fast new kess 3 is set to change the tuning and remapping industry. with superfast ecu remapping processing. as well as flexible options for software and protocols. it is certain to make the new alientech kess 3 tuning tool the market leader. this item is the basic alientech kess 3 hardware. the hardware is neither master nor slave by definition when new. the alientech kess 3 hardware unit is self can be assigned either master tuning or slave tuning and remapping protocols. so the first step is to purchase the kess 3 hardware unit and then select the protocols from the shop to complete the activation of your tuning tool obd mode. with the obd mode, you can easily access all the ecu data through the diagnostic socket. bench mode is a simple interface for logging in, and you have full access to your ecu data. boot mode – this mode allows access to all areas of system data. read, write and clone. configure kess3 to suit your needs and your work. regardless of your level and experience, kess3 gives you the best experience in engine programming.

    more..
  • Computer Graphics Card

    Computer Graphics Card

    5,000 - 10,000 Per Piece

    50 Piece (MOQ)

    • Shape: Rectangular
    • Condition: New
    • Application: Graphics Card
    • Certification: CE Certified
    • Feature: High Performance
    • Country of Origin: India
    more..
  • Computer Processor

    Computer Processor

    Get Price Quote

    20 Pieces (MOQ)

    • Application: Computer Use
    • Feature: Durable, Fast Processor, High Speed
    • Frequency: 60HZ
    • Operating System: IOS, Ubuntu
    • Warranty: 1year
    • Pocessor: Dual Core, I3, I5, I7
    • Brand we Deal: UCT, CP Plus, BenQ , Epson, HP, Zebronics, Consistent, Intex
    more..
  • Computer Socket

    Computer Socket

    Get Price Quote

    100 Piece (MOQ)

    • Material: Metal & Plastic
    • Application: CPU
    • Voltage: 220V
    • Country of Origin: India
    • Surface: Polished
    more..
  • USB Charger Adapter

    USB Charger Adapter

    62 Per Piece

    350 Piece (MOQ)

    • Brand Name: Elove
    • Output Voltage: 5 V
    • Item Weight: 68 g
    • Package Dimensions: 9.9 x 6.1 x 3.3 cm
    • Item Part Number: Wall-Charger-White
    • Compatible Devices: iPhone SE, 6S Plus 6 Plus 5 5C 5S 4S 4, iPad Pro Air 2 Mini 2 3 4 5, iPod touch etc.
    • Number of Ports: 2
    • Current: 2.1 Amp
    • Input Voltage: AC100-240 V
    • Minimum Order Quantity: 1000 Piece
    more..
  • Audient Id4 USB Audio Interface

    Audient Id4 USB Audio Interface

    15,000 - 16,000 Per piece

    1 Piece (MOQ)

    • Type: Usb Interface Controller
    • Color: Black, Gray
    • RANGE: 40dB
    • LINEUP: 12dBu = 0dBFS
    • SNR: 100dBu A-Weighted
    • FREQUENCY RESPONSE: ±0.5dB 10Hz to 20kHz
    • MIC MAX INPUT LEVEL: 12dBu
    • MAX INPUT LEVEL: 21dBu
    • INPUT IMPEDANCE (Mic): 2.8k
    • INPUT IMPEDANCE (Line): >8k
    • DYNAMIC RANGE: 125.5dB A-Weighted
    • Weight: 740 g
    more..
  • Gigabyte Motherboard

    Gigabyte Motherboard

    Get Price Quote

    1 Pieces (MOQ)

    • Brand Name: Gigabyte
    • Certification: CE Certified
    • Application: Laptop
    • Voltage: 12VDC
    • Driven Type: Eelectric
    • Warranty: 1yrs
    more..
  • Computer Chassis

    Computer Chassis

    Get Price Quote

    4U 14-Slot Rackmount Chassis, Full-Size Half-Size CPU Cards Support The ARC-645 is a 4U Rackmount industrial computer chassis that offers one front panel 3.5" drive bay and three front panel 5.25" disk drive bays for Removable Hard Disks or optical disk drives. It supports two internal 3.5" disk drive bay for Hard Disks. The ARC-645 chassis comes with shock-resistant measures to protect storage devices. A 14-slot ISAPICMG bus passive backplate is used to provide many expansion opportunities. It also comes equipped with a standard PS2 ATATX or mini redundant power supply

    more..
  • Gang Programmer For 24 Series

    Gang Programmer For 24 Series

    Get Price Quote

    VPL-GPROG-8/16 Gang Programmer for 24 SeriesVPL-GPROG is one of the most powerful and versatile Gang copier convenient to copy any of the Serial EEPROMS of 24 & 93 series. It is a best product recommended for PC Monitor, TELEVISION, EPABX manufacturers & Production/Servicing people. 8-16 ICs can be copied at a time. The backlighted LCD Display &4 key switches make the operation easy. It has in-built power supplyand a fuse is provided to safeguard the instrument from overvoltage.SPECIFICATIONSSerial EEPROMS of 24/93 series currently supported.Can copy 8/16 devices at a timeUltra Fast speed - 24X16 16 Devices Programmable 7.4 Sec./li>16 x 2 LCD Display.4 keys to perform Device Selection, Program, Verify, Checksum& Selection.In-built Power Supply.Power Consumption : +5V, 600mAMICROCONTROLLER : including INTEL,ATMEL,PHILIPS,WINBOND etc.i8751H i8752H i8751BH i8752BH i87C51 i87C52 i87C54 i87C58 i87C51FA i87C51FB i87C51FC P87C51 P87C52 P87C54 P87C58 P87C51FA P87C51FB P87C51FC P87C451 P87C524 P87C528 P87C552 P87C592 P87C652 P87C654 P89C51UB P89C52UB P89C54UB P89C58UB P89C58B P89C51RA P89C51RB P89C51RC P89C51RD P89C51RD2 S87C51 S87C52 S87C51FA S87C51FB S87C51FC S87C451S87C524 S87C528 S87C552 S87C592 S87C652 S87C654 SST89F54 SST89F58 AT89C51 AT89S51 AT89LS51 AT87F51 AT89C52 AT89S52 AT89LS52 AT89C51RC AT87F52 AT89C55 AT89C55WD AT89S8252 AT89LV51 AT89LV52 ATtiny15LATtiny11L AT89C1051 AT89C2051 AT89C4051 AT90S1200 W78E51 W78E52 W78E54 W78E58 PIC12C508, PIC12C508A, PIC12CE518, PIC12C509, PIC12C509A, PIC12CE519, PIC16C711, PIC16C72, PIC16C72A, PIC16C73, PIC16C73A, PIC16C84, PIC16F72, PIC16F72A, PIC16F73, PIC16F73A, PIC16F84, PIC16F873, PIC16F876, PIC16F876A, PIC16F877, PIC16F877A.

    more..
  • Embedded Motherboard

    Embedded Motherboard

    10,000 Per Piece

    1 Piece(s) (MOQ)

    • Driven Type: UPS
    • Memory Type: DDR3
    • Certification: CE Certified
    • Type: Computer Motherboard
    • Warranty: 2yrs
    • Slots: 1 PCI Slot Support 3.3V
    • Graphic Card: Integrated

    Type Intel Core™ i7 3770 (3.4 GHz - 3.9 GHz turbo - quad core) Intel Core i7 2600 (3.4 GHz - 3.8 GHz turbo - quad core) Intel Core i5 3550S (3 GHz - 3.7 GHz turbo - quad core) Intel Core i3 3220 (3.3 GHz - dual core) Intel Core i3 3120 (3.06 GHz - dual core) Intel Pentium G 2120 (3.1 GHz - dual core) Intel Pentium G 850 (2.9 GHz - dual core) Intel Celeron G 540 (2.5 GHz - dual core) An embedded motherboard is a specialized computing platform designed for integration into embedded systems, where it serves as the central processing unit for controlling and managing various functions and tasks. These motherboards are characterized by their compact size, low power consumption, and extensive feature set tailored for specific embedded applications. Embedded motherboards typically come in various form factors such as Mini-ITX, Micro-ATX, or custom designs, allowing for flexibility in integration into different types of embedded systems. They are equipped with powerful processors from manufacturers like Intel or AMD, along with onboard RAM, storage, and connectivity options to meet the requirements of the intended application. Embedded motherboards often feature a range of interfaces and connectors for connecting peripherals, sensors, displays, and other external devices, enabling seamless integration into embedded systems such as industrial automation, digital signage, medical devices, kiosks, and IoT (Internet of Things) devices. These motherboards may also include features such as ruggedized construction, extended temperature ranges, and long-term availability to ensure reliability and longevity in demanding environments. With their versatility, performance, and scalability, embedded motherboards provide a robust foundation for building customized embedded systems tailored to specific industry requirements and applications.

    more..
  • Mothers Everyday Diary Board

    Mothers Everyday Diary Board

    Get Price Quote

    • Color: White
    • Brand Name: OmyGawd
    • Country of Origin: India
    • Width(Cm): 10
    • Frame: Aluminium
    • Surface Material: Wooden

    Printed Boards are one of the special categories of product designed and manufactured by OmyGawd to meet the day to day requirement of Reusable Writing Surface which can be placed at any important area. This reusable writing surface with different layouts are designed keeping in mind the several specific categories which plays a vital role in each life that can be either planning your day or week or month or year, or planning your weekly kitchens menu or your daily workout or your bucket list and so on for several different purpose. You can use the White Board Markers easily available in the market to write on this surface and can easily wipe it off using a piece of cloth indefinitely.

    more..
  • FANUC Main Board

    FANUC Main Board

    70,000 Per Piece

    1 Piece (MOQ)

    • Brand Name: Fanuc
    • Color: Green
    • Size: Standard
    • Frequency: 50Hz
    • Power: 2-4kw
    • Power Source: Electric
    more..
  • Siemens 6ES71356HD000BA1 Analogue Input Module

    Siemens 6ES71356HD000BA1 Analogue Input Module

    Get Price Quote

    5 Piece (MOQ)

    • Brand Name: Siemens
    • Voltage: 220V
    • Frequency: 50Hz
    • Warranty: 1 Year
    • Size: Standard
    • Uses: Industrial

    SIMATIC ET 200SP, Analog output module, AQ 4XU/I Standard, suitable for BU type A0, A1, Color code CC00, Module diagnostics, 16 bit, +/-0.3%

    more..
  • Honeywell 8C-PAINA1 Analog Input Module

    Honeywell 8C-PAINA1 Analog Input Module

    1,450 Per Piece

    1 Piece (MOQ)

    • Brand Name: Honeywell
    • Type: Analog Input Modules
    • Application: Industrial
    • Weight: 0.24kg
    • Part Number: 51454356-175
    • Mfr. Part Number:: 8C-PAINA1
    • Condition: New
    • Size: 30*20*20cm
    more..
  • TH-32FS4900DX Panasonic Smart LED Tv Motherboard

    TH-32FS4900DX Panasonic Smart LED Tv Motherboard

    4,000 Per Piece

    100 Piece (MOQ)

    • Brand Name: Panasonic Smart
    • Country of Origin: India
    • Material: Fibre Board
    • Board Thickness: 3 cm
    more..
  • KOAT KTC-503 Dual USB Transfer Car Charger Adapter

    KOAT KTC-503 Dual USB Transfer Car Charger Adapter

    120 - 140 Per piece

    10 Piece (MOQ)

    • Brand Name: KOAT
    • Driven Type: Battery
    • Color: Black
    • Condition: New
    • Application: Charging
    • Feature: Usb Car Charger
    • Voltage: 0-6VDC

    KOAT KTC-503 Dual USB Car Charger Adapter is the ideal accessory for anyone on the move, offering convenience and reliable charging for multiple devices at once. Compact yet powerful, it ensures your devices stay powered throughout your journey. Key Features: Dual USB Output: Simultaneously charge two devices with ease, making it perfect for shared use or multitasking on the go. Fast Charging Technology: Delivers stable, high-speed charging for smartphones, tablets, GPS devices, and more. Wide Compatibility: Compatible with all USB-powered devices, including Android, iOS, and other gadgets, ensuring versatility. Durable and Portable Design: Compact, lightweight, and built to last, it seamlessly integrates into any vehicle's 12V/24V socket. Advanced Safety Features: Equipped with protections against overcharging, overheating, and short circuits, offering peace of mind during every use.

    more..
  • Qube Processor Peripherals

    Qube Processor Peripherals

    Get Price Quote

    10 Piece (MOQ)

    • Type: audio peripheral
    • Certification: imported
    • Weight: 2kg
    • Color: Black
    • Condition: New
    • Automatic Grade: Manual
    • Driven Type: Electric
    • Warranty: manufacturing warranty
    • Country of Origin: India
    • Brand Name: Qube
    • Power: 10hp
    more..
  • Expansion Joint Filler Board

    Expansion Joint Filler Board

    400 Per Piece

    20 Piece (MOQ)

    • Country of Origin: India
    • Type: Bitumen Fibrer Fille Board
    • Color: Black
    • Condition: New
    • Power Type: AC
    • Size: 4x4 Square Feet
    • Thickness: 12mm,18mm, 25 Mm
    more..
  • Computer Graphic Card

    Computer Graphic Card

    Get Price Quote

    5 Piece (MOQ)

    • Country of Origin: India
    • Shape: Rectangular
    • Certification: CE Certified
    • Application: Computer
    • Color: Black
    • Warranty: 1 Year
    more..
Filter by City
top