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PCIe x1 card with two DB25 ports and one DB9 port, low-profile bracket included

Vszerda

Vszerda SI-PEX50103 serial cable

SKU CH-K25Q-7ST9X

Adds two parallel ports and one serial port via PCIe x1 using an ASIX AX99100 chipset with 50 bps to 16 Mbps speeds

  • Two serial and one parallel ports on a single PCIe x1 card
  • ASIX AX99100 chipset delivers bi-directional speeds from 50bps to 16Mbps per port
  • Supports RS232, RS422 and RS485 serial standards plus Centronics parallel interface
  • Low-profile bracket included for small-form-factor system compatibility
  • Advanced power management with D1, D2, D3hot and D3cold states

PCIe x1 to DB25 and DB9 card

The Vszerda SI-PEX50103 adds one serial and two parallel ports through a single PCI Express x1 slot. It uses the ASIX AX99100 chipset and includes a low-profile bracket for compact chassis. Each port reaches bi-directional speeds from 50bps to 16Mbps. The card supports SPP, PS2, EPP and ECP parallel modes plus RS232, RS422 and RS485 serial standards.

Legacy I/O for industrial and point-of-sale gear

This card suits technicians maintaining equipment that still relies on DB25 or DB9 connections such as CNC controllers, barcode scanners or older printers. It also fits developers debugging serial protocols on modern motherboards lacking native COM or LPT headers. Buyers who need only USB-based adapters or purely internal pin headers should look elsewhere.

ASIX AX99100 chipset with 16Mbps per port

The AX99100 controller delivers up to 16Mbps bi-directional throughput on each port and handles custom baud rates via an external clock or internal PLL programming. Power management covers D1, D2, D3hot and D3cold states. This specification determines whether the card meets the timing and protocol requirements of your legacy device.

How it compares

Measured against everything we stock in RS-232 Serial Cables, at today’s prices. Recalculated every night.

Price $35.99
Pricier than about 71% of the 93 comparable items (median $21.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I install the SI-PEX50103 card in a PCIe x1 slot and attach the low-profile bracket?

Insert the card into an available PCIe x1 slot, secure the full-height bracket first, then swap to the included low-profile bracket for slim cases before tightening the screw.

Will the ASIX AX99100 chipset need firmware updates or capacitor replacements over time?

The AX99100 operates without user-serviceable firmware; no capacitors are exposed, so no scheduled maintenance is required under normal operation.

At what throughput does the 16 Mbps per port limit appear during continuous bi-directional transfers?

Sustained bi-directional traffic caps at 16 Mbps per port, which is the maximum signalling rate the AX99100 supports.

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