Black Box 1-800-316-7107 


Helping you is our priority at Black Box.

We're committed to providing the best customer service in the industry. We're here for you, 24/7, 365.

We'll call you

A technical expert will call you shortly.

Submit Connecting call...

Call Us

Customer Sales & Service Support

Black Box Brand Product Support

IT Services & Voice Support

Send us a FAX


MicroStat-2 Async RS-232 Multiplexor - 2-Port

Multiplex two async channels onto one async composite link.


Limited Quantity In Stock
Same Day Shipping (before 5PM ET)
Extended Double Diamond™ Warranty Available (3 Additional Year)

*Required field

Product Features

  • Multiplexes two subchannels up to 38.4 kbps.
  • Plugs directly into an RS-232 modem port.
  • Connect two async devices over a single async dialup or leased-line modem link.


  • Supports hardware and software flow control on all ports.
  • Enhanced AT Command Set configuration.
  • Status LED monitors communications link.

  • Now you can virtually double the efficiency of your dialup or leased line modem link. The MicroStat-2 multiplexes two asynchronous channels—at data rates up to 38.4 kbps—onto a single asynchronous point-to-point link. And since both subchannels and the modem channel support these data rates, you can take full advantage of V.34+ modem technology.

    What's more, you get either hardware or software flow control, end to end. Also you can configure both local and remote from the local end.

    The MicroStat-2 derives its power from the RS-232 device, so it doesn't need any outside AC power or batteries.

    Tech Specs

    CE Approval Yes
    Connectors (2) RJ-45, (1) DB25 M
    Flow Control X-ON/X-OFF, RTS/CTS
    Interface RS-232, asynchronous
    Multiplexor Type Statistical
    Power From the attached DCE device
    Size 2.2"H x 1.7"W x 0.8"D (5.6 x 4.3 x 2 cm)
    Speed Subchannel: 110 bps to 38.4 kbps; Composite: 1200 bps to 38.4 kbps
    Temperature Tolerance Operating: 32 to 114° F (0 to 45° C) Storage: -40 to +176° F (-40 to +80° C)
    Weight 1 lb. (0.5 kg)
    Must be used in pairs.

    This product works with:
  • RJ-45/DB25 to DTE Adapter Kits (MX530–MX531)
  • RJ-45 (8-Wire) Modular Cable, Straight-Pinned (EL08MS)

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.

  • Support

    Application Diagram


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $33.99

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $67.98


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The 2-Port Async RS232 Multiplexor comes with a standard 1 Year Double Diamond™ Warranty (Standard) already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.