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Green PCI card with one 9-pin serial and one 25-pin parallel port plus ribbon cable

SIIG, Inc

SIIG, Inc LP-P11011-S6 16550 serial ECP/EPP parallel PCI expansion card

SKU CH-6X33-2XK78 MPN LP-P11011-S6

Adds one 16550 serial port up to 230 Kbps and one ECP/EPP parallel port via 32-bit PCI with IRQ sharing and 5 V or 12 V power options

  • External connectors1 x Serial Port 1 x Parallel Port
  • Transfer speedSerial Port up to 230 kbit/s
  • Supported operating systemsWindows 95/98/98SE/ME/NT4.0/2000/XP/Server 2003
  • Product typePCI to Parallel / Serial Port Card
  • DetailsRegulatory approval(s): FCC Class B (DoC) & CE RoHS-complian
  • Key featuresSupports 32-/64-bit, 3.3 V/5 V PCI and PCI-X slots Will work
  • Adds one 16550 serial and one ECP/EPP parallel port
  • Serial data rate up to 230 Kbps with 16550 UART
  • Fits 32-bit and 64-bit PCI or PCI-X slots
  • Jumper-selectable 5 V or 12 V power on serial port
  • FCC Class B, CE and RoHS compliant

PCI Serial and Parallel Card

The SIIG LP-P11011-S6 adds one 16550 serial port and one ECP/EPP parallel port through a 32-bit PCI slot. It supports 3.3V or 5V signalling and fits both 32-bit and 64-bit PCI or PCI-X sockets. Jumpers on the board select 5V or 12V power on the serial port for scanners or POS displays.

Suits legacy peripheral users.

This card serves technicians maintaining equipment that still relies on RS-232 or Centronics connections. It also helps integrate powered serial devices without an external adapter. Builders whose motherboards lack PCI slots or who only need USB-native peripherals should look elsewhere.

Single 32-bit PCI slot required

The adapter installs in one 32-bit PCI or PCI-X expansion slot and includes a low-profile bracket plus a fan-out cable for the two external connectors. Verify that the target system provides a compatible slot before purchase.

How it compares

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

Price $74.99
Pricier than about 81% of the 891 comparable items (median $30.99).

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Specifications

Product
Brand nameSIIG
Model nameLP-P11011-S6
Product typePCI to Parallel / Serial Port Card
Performance
Transfer speedSerial Port up to 230 kbit/s
Ports & slots
External connectors1 x Serial Port
1 x Parallel Port
Size & build
Shipping weight0.91 kg
Package size203 × 152 × 51 mm
Compatibility
Supported operating systemsWindows 95/98/98SE/ME/NT4.0/2000/XP/Server 2003
In the box
In the boxLow Profile PCI-1S1P adapter
1S1P fanout cable

Questions about this item

How much heat or noise does the LP-P11011-S6 produce when left running all day?

The card has no fan and draws minimal power from the PCI bus, so it runs silently and adds negligible heat inside the chassis.

What must my motherboard already have for this card to work?

An available 32-bit PCI slot that accepts 3.3 V or 5 V signalling — compatible with standard PCI and PCI-X slots.

Will the 16550 serial port and ECP/EPP parallel port work reliably alongside older ISA serial or parallel cards I still use?

The card uses IRQ sharing to reduce conflicts, and its 32-byte FIFO buffers help it coexist with legacy ISA ports without data loss.

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