Description
HP J4121A ProCurve Switch 4000M 5x J4111A 10/100Base-T Modules Rackmount
The HP ProCurve Switch 4000M (J4121A) is a modular, managed 10/100 Ethernet switch chassis designed for enterprise wiring closet and data center deployments. This listing includes the J4121A chassis populated with five HP J4111A 10/100Base-T modules and the HP ProCurve 4000M/8000M power supply — a complete, ready-to-configure managed switching solution.
Specifications & What's Included
- Chassis Model: HP J4121A ProCurve Switch 4000M
- Installed Modules: 5x HP J4111A 10/100Base-T Modules
- Port Speed: 10/100Base-T (RJ-45)
- Total Ports: Up to 100 switched 10/100 ports across 5 modules (up to 24 ports per J4111A module)
- Management: Managed (console, SNMP, web-based)
- Console Port: DB-9 serial (front panel)
- Front Panel Indicators: Power LED, Fault LED, Switch Engine Fail, Self Test, Mode/Act/Fdx indicators
- Controls: Reset and Clear buttons (front panel)
- Power Supply: HP ProCurve Switch 4000M/8000M Power Supply (included)
- Power Input: 100–127 VAC, 2.0 A / 200–240 VAC, 1.0 A, 50/60 Hz (IEC C14 inlet)
- Form Factor: Rackmount (4U chassis)
Applications
The HP ProCurve Switch 4000M was designed for enterprise network infrastructure in the late 1990s and early 2000s, when modular chassis switches provided a flexible, scalable alternative to fixed-configuration switches in wiring closets and campus backbone deployments. Its modular slot architecture allowed network administrators to mix 10/100 copper, 100Base-FX fiber, and Gigabit uplink modules within a single chassis, making it adaptable to evolving network needs without replacing the entire unit. The J4111A 10/100Base-T modules each provide a dense block of switched Fast Ethernet ports suitable for connecting workstations, IP phones, and other end devices. Today, units like this see continued use in legacy enterprise environments, small business networks, lab and test setups, and educational institutions maintaining older infrastructure. The HP ProCurve (later rebranded as Aruba Networks) line was widely deployed across corporate campuses, government facilities, and higher education networks throughout this era.
This HP J4121A ProCurve Switch 4000M with five J4111A 10/100Base-T modules has been inspected and is in good used condition. It was pulled from a working environment where it was in use and functional. The chassis, modules, and included power supply all appear intact with normal wear consistent with enterprise use. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
HP (Hewlett-Packard) |
Model: |
J4121A |
MPN: |
J4121A |
Secondary Model: |
J4111A |
Type: |
Managed Modular Ethernet Switch |
SKU: |
47108 |
Series: |
HP ProCurve Switch 4000M |
Number of Ports: |
100 (5x J4111A modules, 24 ports each = 100 ports) |
Port Speed: |
10/100Base-T |
Management Type: |
Managed |
Form Factor: |
Rackmount |
Connector Type: |
RJ-45 |
Power Requirements: |
100-127VAC 2.0A / 200-240VAC 1.0A, 50/60Hz |
Included Modules: |
5x HP J4111A 10/100Base-T Modules |
Power Supply: |
HP ProCurve Switch 4000M/8000M Power Supply (included) |
Console Port: |
DB-9 Serial Console Port |
Compatible With: |
HP ProCurve Switch 4000M / 8000M chassis |
Seller Notes: |
Includes 5x J4111A 10/100Base-T modules and ProCurve 4000M/8000M power supply |
Condition: |
Used – Pulled from Working Environment |
Country/Region of Manufacture: |
United States |
Condition Notes: |
HP J4121A ProCurve Switch 4000M with 5x J4111A modules inspected and in good used condition. Pulled from a working environment where it was functional. Includes power supply. |
