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 circuit board with eight DB-9 ports on a metal bracket

SUNIX

SUNIX SER5466A 8-port RS-232 PCIe x1 expansion card

SKU CH-15YN-VEHWZ MPN SER5466A

Adds eight RS-232 serial ports via a PCIe x1 slot with 115.2 Kbps speeds and 128-byte FIFO buffers

  • DetailsInterface : RS-232 Controller: SUNIX SUN1999 (16C950 UART Co
  • Key featuresExpands 8 independent RS-232 serial ports with communication
  • Product dimensions127 × 98 mm
  • Adds eight independent RS-232 ports for legacy device connectivity
  • SUN1999 16C950-compatible UART controller handles high-speed serial communication
  • PCI Express x1 interface fits x1, x2, x4, x8 or x16 slots
  • On-chip hardware auto flow control prevents data loss during transfers
  • Built-in ±15KV ESD protection meets IEC1000-4-2 standard for signal safety

Eight independent serial ports

The SUNIX SER5466A adds eight RS-232 interfaces through a single PCI Express x1 slot. A SUN1999 controller compatible with the 16C950 UART handles each channel with a 128 byte hardware FIFO. Communication rates span 50 bps to 115.2 Kbps with selectable data, stop and parity settings.

Industrial and legacy connectivity

This card suits users connecting PLCs, modems, barcode scanners or older industrial equipment that still rely on DB-9 serial links. It is not for builds needing USB, parallel or Ethernet expansion, nor for systems lacking a free PCI Express x1, x2, x4, x8 or x16 slot.

Check slot and bracket clearance

Verify the motherboard offers an open PCI Express slot with a standard bracket opening; the board measures 127 x 98 mm. Confirm the operating system is among supported Windows, Linux or DOS releases. Ensure connected devices use RS-232 signalling with TxD, RxD, RTS, CTS, DTR, DSR, DCD and ground pins.

How it compares

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

Price $111.99
Pricier than about 86% of the 891 comparable items (median $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 nameSUNIX
Model nameSER5466A
Size & build
Product dimensions127 × 98 mm
Shipping weight0.69 kg
Package size226 × 183 × 97 mm

Questions about this item

What type of PCI Express slot does the SER5466A need to operate?

It fits any PCI Express x1, x2, x4, x8 or x16 slot and runs on a single lane.

Will the card share an interrupt with my existing PCI serial adapters?

The system assigns IRQ and I/O automatically, so the eight new ports coexist without manual conflict resolution.

How can I confirm all eight ports are communicating at 115.2 Kbps after installation?

Open Device Manager or run a terminal loop-back test on each port; the SUN1999 UART reports the active baud rate and 128-byte FIFO status.

More in PCIe Expansion Cards

Similar items