Description
NEC N4810 DSP 208A/B R-L1 External Modem NEC America w/ AULT Power Supply
The NEC N4810 is an external DSP modem produced by NEC Corporation and marketed through NEC America, Inc. Manufactured in Japan in September 1984, this is an early-1980s standalone desktop modem designed to connect computing equipment to standard telephone lines via a serial interface. The unit carries the DSP 208A/B R-L1 designation and communicates through a DB25 serial port, with two RJ-11 jacks on the rear for telephone line and handset connections. The external NEC America power supply (made by AULT Inc.) is included.
Specifications & What's Included
- Model: NEC N4810
- Designation: DSP 208A/B R-L1
- Manufacturer: NEC Corporation / NEC America, Inc.
- Country of Manufacture: Japan
- Manufacture Date: September 1984
- Form Factor: External desktop
- Serial Interface: DB25 connector (rear panel)
- Telephone Connectors: 2x RJ-11 jacks (Line and Tel ports, rear panel)
- Front panel: indicator LEDs, two BNC-style connectors, and a small door/compartment
- Included: NEC America external power supply (AULT Inc., model 8T10-305-491B)
- Power supply input: 120V AC (per label)
- UL Listed power supply
Applications
The NEC N4810 dates from the very early 1980s era of standalone external modems, when serial-connected external modems were standard equipment for connecting business computer terminals, minicomputers, and early microcomputers to telephone networks for data transmission. External modems of this type were used with RS-232 serial ports on mainframe terminals, word processors, and early PCs for dial-up data communications in corporate and government environments. The DSP 208A/B designation suggests compliance with the Bell 208 standard, a synchronous 4800 bps modem standard commonly used in IBM and compatible business computing environments of the era. This type of equipment is now obsolete for active data communications use but is sought by vintage computing collectors, telecommunications historians, and engineers maintaining or studying legacy systems from this period.
This NEC N4810 DSP 208A/B R-L1 External Modem has been inspected and appears to be in good used condition. The unit dates from September 1984 (per the bottom label) and shows normal cosmetic wear consistent with its age, including light scuffing on the chassis. The rear ports (DB25 serial connector and two RJ-11 telephone line jacks) appear intact and undamaged. The included AULT Inc. power supply (model 8T10-305-491B) shows typical wear but is present and included with the sale. This unit has not been powered up or tested at our facility. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
NEC |
Model: |
N4810 |
MPN: |
N4810 |
Secondary Model: |
DSP 208A/B R-L1 |
Type: |
External Modem |
SKU: |
8194 |
Manufacturer: |
NEC Corporation / NEC America, Inc. |
Country/Region of Manufacture: |
Japan |
Manufacture Date: |
September 1984 |
Form Factor: |
Desktop / External |
Connector Type: |
DB25 Serial, RJ-11 (Line/Tel ports) |
Number of Ports: |
3 (1x DB25 serial, 2x RJ-11) |
Interface Type: |
Serial (DB25), RJ-11 telephone line |
Power Supply: |
AULT Inc. Model 8T10-305-491B (included) |
Power Supply Input: |
120V AC |
Seller Notes: |
Includes NEC America external power supply unit (AULT Inc. 8T10-305-491B) |
Condition Notes: |
NEC N4810 DSP 208A/B External Modem in good used condition with normal age-related wear. Ports appear intact. Includes AULT power supply. Not powered or tested at our facility. Please contact us with any questions. |
Condition: |
Used – Inspected |
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 |