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SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card, 16C650 UART, JJ-E20311-S1
SIIG

SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card, 16C650 UART, JJ-E20311-S1

Bottom line: The SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card is a specs-and-price decision rather than a crowd-consensus one in the expansion cards category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Backed by SIIG's warranty and support channels

Cons

  • ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
  • ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated

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SpecPicks Verdict

SpecPicks scored SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card using a rating × review-volume × price-fit model applied to published specs and reviews across the expansion cards category. SIIG's expansion cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for expansion cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • SERIAL AND PARALLEL PORT: Easily adds one serial port and one parallel port through an available PCI Express slot. 16C650 UART serial port with data transfer rates of up to 250Kbps. Compliant with PCI Express 2.0 Gen 1. Compatible with IEEE 1284 -1994 parallel port standard for SPP/Byte/ECP Mode
  • PHY INTEGRATION: Single-lane (X1) PCI Express end-point controller with PHY integrated. Full serial modem control. Hardware and software flow control
  • SERIAL FORMAT: 5, 6, 7, 8 and 9-bit serial format. Even, odd, none, space and mark parity. On chip 256 byte FIFO buffers in transmit, receive path
  • RS-232: Works as standard RS-232 port or with 5V or 12V power output for devices that require power (such as handheld scanners, table scanners, POS displays, etc.), power output configurable via jumpers. Supports PCI bus Power Management Interface Specification Revision 1.2
  • DUAL PROFILE: Dual-profile design fits full height and low-profile system chassis with the included spare low-profile brackets. Perfect solution to connect with POS systems, industrial testing and control devices, security systems, logistic management equipment, printers, scanners, etc.

Full Specifications

BrandSIIG
StyleMusic
Style NameMusic
Unit Count1 Count
Model NumberJJ-E20311-S1
SERIAL FORMAT5, 6, 7, 8 and 9-bit serial format. Even, odd, none, space and mark parity. On chip 256 byte FIFO buffers in transmit, receive path
Mfr Part NumberJJ-E20311-S1
Number of Items1
Number of Packs1
PHY INTEGRATIONSingle-lane (X1) PCI Express end-point controller with PHY integrated. Full serial modem control. Hardware and software flow control
Compatible DevicesDesktop
Hardware InterfaceParallel interface, Serial Interface
Warranty Description2 Year Limited

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SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card, 16C650 UART, JJ-E20311-S1 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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SIIG 1-Port RS-232 and 1-Port Parallel PCIe Card, 16C650 UART, JJ-E20311-S1
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