TL553A-R3 by Black Box Corporation

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Manufacturer Black Box Corporation
Manufacturer's Part Number TL553A-R3
Description Black Box; Product Type: Serial Hub; Host Interface: Serial; Form Factor: External; Depth: 11.1 "; Weight (Approximate): 5 lb;
NAME DESCRIPTION
Data Transfer Rate: Up to 64kB/s Serial Port
Weight (Approximate): 5 lb
Environmental Certification: WEEE
Environmentally Friendly: Yes
Product Name: RS-232 Data Sharer, 4-Port
Limited Warranty: 1 Year
Depth: 11.1 "
Number of Serial Ports (External): 4
Brand Name: Black Box
Form Factor: External
Marketing Information: Reduce line costs in your RS-232 system by using a BLACK BOX® RS-232 Data Sharer to connect four devices to a single modem and phone line.

The RS-232 Data Sharer features transparent operation up to 64 kbps and convenient LED monitoring. Front-panel switches enable and disable RTS on each input port.

The Data Sharer features antistreaming circuitry to lock out any port the instant it begins to stream. On this 4-port model, hardware-prioritized scanning lets the most frequently used channels go first.

The RS-232 Data Sharer is compatible with various popular IBM communications protocols, such as half-duplex Bisynchronous Communication and Synchronous Data Link Control (SDLC).
Product Type: Serial Hub
Host Interface: Serial
Height: 2.9 "
Width: 12.5 "
Country of Origin: United States