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
PCI plug-in card with two DB-9 serial ports

HP

HP KH887AA 2-Port Powered Serial Card pos accessory

SKU CH-B2YB-PR72S MPN KH887AA

Adds two powered RS-232 serial ports to HP rp5700 or rp3000 point-of-sale systems via PCI, supplying 5 or 12 volts per port to remove external power bricks

  • TypePower Supply
  • SpecificationConnectivity Technology: Wired Form Factor: Plug-in card Int
  • CompatibilityCompatible with: - Business Desktop PCs: HP rp5700 Desktop P
  • FeatureConnect multiple powered RS-232 serial devices to your HP rp
  • Adds two powered serial ports to your HP rp5700 POS system
  • Each port delivers 5 V or 12 V so external power bricks are not needed
  • Simple plug-in PCI card installs without extra configuration
  • Designed for HP rp3000 and rp5700 point-of-sale systems
  • Wired DB-9 connectors give reliable serial device connectivity

Two serial ports with DB-9 connectors

The HP KH887AA is a PCI plug-in card that adds two high-performance serial ports to compatible point-of-sale systems. Each port uses a DB-9 connector and can supply either 5 volts or 12 volts of power independently. This design lets you connect powered RS-232 peripherals such as receipt printers or barcode scanners without individual power bricks. It is built for the HP rp3000 and rp5700 point-of-sale systems as well as the HP rp5700 desktop PC.

Simple PCI installation with no extra cables

Install the card into an available PCI slot on the supported system and the operating system recognises it immediately. Plug-and-play operation means no driver discs or manual configuration are required for basic use. The only common issue is attempting to fit the card into a PCIe-only slot or a low-profile chassis without the correct bracket, which will prevent the card from seating properly. Ensure the host system has a standard PCI slot and enough bracket clearance before starting.

Verify PCI slot and system model before ordering

Confirm that your target machine is an HP rp3000 or rp5700 point-of-sale system, or an HP rp5700 desktop PC, as compatibility is limited to those models. Check the motherboard for a free legacy PCI slot, not PCIe, because the card uses the PCI interface. Also verify that the chassis can accept a full-height bracket so the DB-9 ports are accessible at the rear. If any of these conditions are not met, the card will not install or function.

Highlights

  • Adds two powered serial ports to your HP rp5700 POS system
  • Each port delivers 5 V or 12 V so external power bricks are not needed
  • Simple plug-in PCI card installs without extra configuration
  • Designed for HP rp3000 and rp5700 point-of-sale systems
  • Wired DB-9 connectors give reliable serial device connectivity

Specifications

BrandHP
ModelKH887AA
TypePower Supply
SpecificationConnectivity Technology: Wired
Form Factor: Plug-in card
Interface Type: PCI
Ports Qty: 2
Type: Serial adapter
CompatibilityCompatible with:
- Business Desktop PCs: HP rp5700 Desktop PC
- Point of Sale Solutions:
HP rp3000 Point of Sale System
HP rp5700 Point of Sale System
FeatureConnect multiple powered RS-232 serial devices to your HP rp5700 Point of Sale system
Plug and play
Eliminate individual power supply bricks for serial devices
Shipping weight0.45 kg
Package size127 × 127 × 127 mm

Questions about this item

How can I verify the KH887AA card is functioning after installing it in my rp5700?

Open Device Manager on the rp5700 and confirm two new COM ports appear without error codes; then connect a powered RS-232 device to each DB-9 port and check that it receives 5 V or 12 V as configured.

What comes with the KH887AA and what must I source separately?

The box contains the PCI plug-in card with two DB-9 ports; cables, serial peripherals and any mounting brackets for the rp3000 or rp5700 chassis are not included.

Which version of the KH887AA should I choose for an HP rp3000 Point of Sale System?

The single KH887AA model is validated for both the rp3000 and rp5700 systems; select it when you need two powered RS-232 ports on a PCI slot.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.