Description
Microcom AX9624C External Modem RS-232 DB25 RJ11 19VAC No Power Cable
The Microcom AX9624C is a desktop external modem manufactured by Microcom Inc. of Norwood, Massachusetts. It connects to a host computer via a DB25 RS-232 serial interface and to the telephone network via standard RJ11 jacks. Configuration is handled through a 10-position DIP switch bank accessible on the front panel, with eight front-panel LED indicators providing status at a glance.
Specifications & What's Included
- Brand: Microcom Inc., Norwood, MA USA
- Model: AX9624C (label also reads AX96240)
- Type: External desktop dial-up modem
- Host interface: RS-232 via DB25 female connector
- Telephone interface: Dual RJ11 jacks (line / phone)
- Power: 19VAC, 0.80A, 50/60Hz (power cable NOT included)
- Configuration: 10-position DIP switch (front panel, positions 1–10)
- Additional rear DIP switch bank (8 positions visible)
- Front-panel LED indicators: 8 total (green and red)
- Rear: power connector, volume/speaker control knob
- Standards: FCC Part 15 Class B; FCC Part 68
- Form factor: External desktop
- Included: Modem unit only — no power cable, no serial cable
Applications
The Microcom AX9624C is a dial-up modem from the early-to-mid 1990s, designed for use with DOS and early Windows PCs equipped with a standard RS-232 serial port. Microcom was well known for developing the MNP (Microcom Networking Protocol) error-correction standard, which was later incorporated into the V.42 ITU standard and became a baseline feature across the industry. External modems of this type were used to connect computers to bulletin board systems (BBS), online services, and early internet service providers over standard PSTN telephone lines. The DB25 RS-232 interface was the dominant serial connection standard of the era, and DIP switch configuration was typical before software-only setup became universal. These units are primarily of interest today for retrocomputing enthusiasts and collectors maintaining legacy systems that require a period-correct external modem.
This Microcom AX9624C external modem has been inspected and appears to be in good used condition. It was pulled from a working environment where it was previously in use. The housing shows normal cosmetic wear consistent with age and prior use. Note that no power cable is included — buyers will need to source a 19VAC 0.80A replacement. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Microcom |
Model: |
AX9624C |
MPN: |
AX9624C |
Type: |
External Dial-Up Modem |
SKU: |
8101 |
Interface Type: |
RS-232 (DB25) |
Connector Type: |
DB25 Female, RJ11 x2, Power connector |
Power Requirements: |
19VAC, 0.80A, 50/60Hz |
Configuration: |
10-position DIP switch (positions 1–10) |
Status Indicators: |
8 front-panel LED indicators (green and red) |
Form Factor: |
External Desktop |
Standards Compliance: |
FCC Part 15 Class B; FCC Part 68 |
Country/Region of Manufacture: |
USA |
Seller Notes: |
Modem only — no power cable included. |
Condition Notes: |
This Microcom AX9624C external modem has been inspected and is in good used condition, pulled from a working environment. No power cable is included — a 19VAC 0.80A cable is required. Please contact us with any questions. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
