Practical Peripherals PM14400FXSA V.32bis External Modem 14400 Baud No PSU

Practical Peripherals PM14400FXSA V.32bis External Modem 14400 Baud No PSU

The Practical Peripherals PM14400FXSA is a V.32bis external dial-up modem capable of data rates up to 14,400 bps (14.4 Kbps). It connects to a host computer via a standard DB-25 RS-232 serial port and to the telephone line via RJ-11 jacks, with a second RJ-11 pass-through port for a telephone handset. The front panel features a row of ten LED status indicators — MR, TR, RS, CS, RD, TX, RX, OH, AA, and SD — allowing real-time monitoring of modem status and call activity. Made in the USA, the unit carries FCC ID DUPPM14400SA and complies with FCC Parts 15 and 68.

Specifications & What's Included

• Model: Practical Peripherals PM14400FXSA V.32bis
• Maximum data rate: 14,400 bps (V.32bis)
• Modulation standard: V.32bis
• Error correction / compression: V.42 / V.42bis
• Host interface: DB-25 RS-232 serial
• Phone line connection: RJ-11 (Line)
• Phone handset pass-through: RJ-11 (Phone)
• Front-panel LED indicators: MR, TR, RS, CS, RD, TX, RX, OH, AA, SD (10 LEDs)
• Front-panel display strip (backlit LCD label)
• Form factor: Desktop external enclosure
• FCC ID: DUPPM14400SA
• FCC Registration No.: DUPUSA-73018-MD-E
• Ringer Equivalence Number: 0.7B
• Country of manufacture: USA
• Included: modem unit only — power supply is NOT included

Applications

The Practical Peripherals PM14400FXSA is a mid-1990s era V.32bis external dial-up modem, dating from the period when 14.4 Kbps was the prevailing standard for dial-up internet and bulletin board system (BBS) access before V.34 (28.8 Kbps) took over. External modems of this class were connected to PCs, Macs, and workstations via RS-232 serial ports and used to establish point-to-point connections over the public switched telephone network (PSTN) for internet access, fax transmission, and remote dial-in. The V.32bis standard supported full-duplex operation at 14,400 bps with V.42bis data compression providing effective throughput of up to roughly 57,600 bps under ideal conditions. The external form factor — as opposed to internal ISA or PCI modems — allowed the LED status array to be visible during operation, which made troubleshooting line conditions straightforward. These modems are now sought primarily by collectors of vintage computing hardware, hobbyists maintaining legacy dial-up or BBS systems, and anyone needing a period-correct serial modem for retro computing setups.