Carrier Access 8575H5 HUBmaster 5-Port 10/100 Ethernet Hub Module Card

Carrier Access 8575H5 HUBmaster 5-Port 10/100 Ethernet Hub Module Card

The Carrier Access 8575H5 HUBmaster is a 5-port 10/100 Mbps Ethernet hub module designed to plug into a Carrier Access chassis. It provides switched Ethernet connectivity within the chassis backplane, allowing connected devices to communicate over standard 10BaseT or 100BaseTX Ethernet links. The module slides into a card slot and interfaces with the chassis via a high-density card-edge backplane connector, drawing power and management from the host system.

Specifications & What's Included

• Model: Carrier Access 8575H5 HUBmaster
• Type: 5-Port Ethernet Hub Module (plug-in card)
• Number of Ports: 5 × RJ-45 (numbered 1–5 on faceplate)
• Port Speed: 10/100 Mbps (10BaseT / 100BaseTX) per port
• Per-Port Indicators: Link/Activity (L/A) LED per port; 10/100 speed indicator
• System LEDs: PWR (power) and COL (collision) indicators on faceplate
• Backplane Interface: High-density card-edge connector (chassis backplane)
• Form Factor: Single-slot plug-in module / card
• PCB: Orange fiberglass PCB with metal shield cover; DIP ICs and oscillator visible
• Included: Hub module only — no chassis included

Applications

The Carrier Access HUBmaster module was designed for use within Carrier Access chassis-based access systems, which were widely deployed in the late 1990s and early 2000s for last-mile T1 and broadband access aggregation. The Ethernet hub module extended local LAN connectivity within those chassis, allowing CPE devices, routers, or other modules to share a common Ethernet segment over the chassis backplane. Carrier Access equipment of this era was commonly found in CLEC and ISP central offices, enterprise data closets, and multi-tenant building distribution points. Today these modules are primarily sought by organizations maintaining legacy Carrier Access chassis installations or by technicians sourcing spare capacity cards for existing deployed systems. The 10/100 Mbps Ethernet hub function remains straightforward and compatible with any standard Ethernet device.