We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green PCIe x1 card with four DB9 serial ports on a fan-out cable and low-profile bracket

TeKit

TeKit 4 Ports PCI Express to Serial Port Card

SKU CH-2GN9-V9QX7

Adds four DB9 serial RS232 ports via a PCIe x1 slot using a WCH384 chipset with 16C950-compatible UARTs and 128-byte FIFOs

  • External USB ports4 Port
  • Product typePCI Express to Serial Port Card
  • Details4 DB 9 serial rs232 ports pcie x1 I/O controller card with f
  • Key features4 DB 9 serial rs232 ports pcie x1 I/O controller card with f
  • In the box1 x Powered RS-232 4-Port PCIe Card •1 x Driver CD •1 x User
  • Adds four RS-232 serial ports via a single PCIe x1 slot
  • WCH384 chipset delivers up to 230400 bps per port
  • 16C950-compatible UARTs with 128-byte FIFOs reduce CPU overhead
  • Selectable 5 V or 12 V power on pins 1 and 9
  • Low-profile bracket and fan-out cable fit compact chassis

Four-port serial expansion

The TeKit PCI Express card adds four DB9 RS-232 ports through a single x1 slot. It targets industrial users, automation engineers and legacy-equipment maintainers who need reliable serial connectivity on modern motherboards. The WCH384 chipset provides 16C950-compatible UARTs with 128-byte FIFOs for stable data transfer up to 230400bps.

Slot flexibility and power options

The card accepts x1, x2, x4, x8 or x16 PCI Express connectors and includes a low-profile bracket for compact chassis. A fan-out cable breaks the single bracket cutout into four DB9 connectors. Each port can optionally supply 5 V or 12 V DC on pin 1 or pin 9, letting you power external serial devices without separate adapters.

Sustained throughput with deep buffers

Under continuous load the 128-byte transmit and receive FIFOs reduce CPU interrupt overhead and prevent data loss during long transfers. BIOS-assigned I/O addresses and IRQs keep resource conflicts to a minimum. Driver support spans 32-bit and 64-bit Windows from 98 through 8 plus Linux kernels 2.4 and 2.6, so the card remains usable across mixed-OS deployments.

How it compares

Measured against everything we stock in PCIe Expansion Cards, at today’s prices. Recalculated every night.

Price $28.99
Typical for this category: the median of 891 items is $30.99.

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameTeKit
Model name4 Ports
Product typePCI Express to Serial Port Card
Ports & slots
External USB ports4 Port
In the box
In the box1 x Powered RS-232 4-Port PCIe Card •1 x Driver CD •1 x User Manual •1 x Low Profile

Questions about this item

What is the maximum data transfer rate per serial port on the TeKit 4 Ports card?

Each port supports up to 230400bps using the built-in 16C950-compatible UART with 128-byte FIFOs.

Does the card need extra cooling or power when all four ports run continuously?

The card draws power from the PCIe x1 slot and includes a fan-out cable; no separate power connector or active cooling is required.

What must the system provide for the card to function?

One free PCI Express slot (x1 or wider) and a supported OS such as Windows 32-bit 2000/XP/2003/Vista/7, 64-bit XP/2003/Vista/7/8, or Linux kernel 2.4/2.6.

More in PCIe Expansion Cards

Similar items