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Black Box ME662A-SST fiber extender module with DB9 female and ST connectors

Black Box Corporation

Black Box ME662A-SST Async RS-232 Extender Fiber DB9 Female ST SM 30-Km Switch Module

SKU CH-XYGN-HJZSH MPN ME662A-SST

Converts asynchronous RS-232 signals to single-mode fiber with ST connectors for distances up to 30 km

  • Extends async RS-232 signals up to 30 kilometres over single-mode fibre
  • DB9 female connector provides direct DTE/DCE attachment without gender changers
  • ST fibre interface ensures secure, industry-standard single-mode connection
  • Switch-module form factor fits standard chassis for dense, managed deployments
  • Black Box engineering delivers reliable serial-to-fibre conversion for industrial networks

Async RS-232 fiber extender

The Black Box ME662A-SST extends asynchronous RS-232 signals over single-mode fiber using ST connectors. A DB9 female interface connects directly to serial equipment. The module is designed for commercial network installations that need to bridge copper serial links across long distances.

Replaces copper serial runs

This module replaces traditional copper RS-232 cabling when the link distance exceeds reliable copper limits. The fiber link supports spans up to 30 kilometers without signal degradation. The upgrade is worth it whenever electromagnetic interference or ground-loop issues make copper unreliable.

Capacity and headroom

The extender handles standard asynchronous serial data streams across the full 30-kilometer single-mode fiber path. It runs out when the application requires synchronous signaling, multi-drop configurations, or distances beyond the rated single-mode reach.

How it compares

Measured against everything we stock in Switch Modules, Transceivers & Add-Ons, at today’s prices. Recalculated every night.

Price $533.99
Pricier than about 90% of the 1,517 comparable items (median $68.99).

Specifications

Size & build
Shipping weight0.91 kg
Package size198 × 185 × 66 mm

Questions about this item

What DB9 connector gender does the ME662A-SST module require for the RS-232 side?

The module uses a DB9 female connector for the asynchronous RS-232 interface.

How is the fiber link connected on the ME662A-SST and what distance does it support?

Connect single-mode fiber to the ST ports; the link operates up to 30 km.

What fiber type and connector should be kept on hand for future maintenance of the ME662A-SST?

Keep single-mode fiber with ST connectors available for any link replacement or repair.

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