Parts

The Cisco WS-X6748-SFP is a 48-port Gigabit Ethernet SFP switch module for the Cisco Catalyst 6500 / 7600 Series chassis-based switches. It is a classic, high-density line card from the mid-2000s era, widely deployed in enterprise, campus, data center, and service provider networks for Gigabit Ethernet aggregation over fiber.

The WS-X6748-SFP is a CEF720-based (Cisco Express Forwarding) 48-port 1000BASE-X SFP module that provides 48 × 1 Gigabit Ethernet ports using SFP transceivers (Small Form-factor Pluggable). It is designed for high-performance, non-blocking Layer 2/3 switching and routing in Catalyst 6500/6500-E/7600/7600-S chassis.

Key highlights:

• All 48 ports are 1 Gigabit Ethernet only (1000BASE-X) — no 10/100/1000 copper or 10GbE support
• Uses standard SFP transceivers (1000BASE-SX, LX, ZX, T, etc.)
• Integrated CEF720 forwarding engine with distributed forwarding (dCEF) when paired with a Supervisor Engine that supports it (e.g., Sup720, Sup32, Sup720-10G, Sup2T)
• Full Layer 2 switching + Layer 3 routing (with appropriate supervisor and PFC/MSFC)
• Very high port density in a single slot — up to 384 Gigabit ports in a 13-slot 6513 chassis
• Supports Jumbo frames (up to 9216 bytes), QoS, ACLs, NetFlow, MPLS, VRF-Lite, and multicast

This module was extremely popular for fiber-based Gigabit aggregation in large campuses, data centers, or metro Ethernet deployments before the widespread adoption of 10GbE and higher-speed modules (e.g., WS-X6908-10G, WS-X6848-SFP-2T).

CLONEPARTNUMBER Product Description

The Zebra ZM400 is a mid-range industrial barcode label printer from Zebra's Z Series (launched early 2000s, widely used through the 2010s and still supported in 2025–2026). It is a 4-inch direct thermal / thermal transfer printer built for high-volume, reliable label printing in warehouse, manufacturing, logistics, retail, healthcare, and transportation environments.

This model is known for its rugged metal construction, excellent print quality, ease of use, and compatibility with a wide range of media types and legacy systems — making it a workhorse in many facilities even today.

Product Description

The Zebra ZM400 is a 4-inch (104 mm) wide industrial label printer that supports both direct thermal (no ribbon) and thermal transfer (with ribbon) printing. It prints at speeds up to 8 inches per second (203 mm/s) with resolutions of 203 dpi (standard) or 300 dpi (optional upgrade).

Key features include:

• Durable all-metal chassis and printhead for harsh industrial use
• Easy media loading with wide-open printhead and color-coded media path
• ZebraLink connectivity (serial, parallel, USB, Ethernet options)
• Support for ZPL II, EPL2, and Zebra Basic Interpreter languages
• Large LCD control panel (optional) or LED indicators for status and configuration
• Adjustable media sensors (reflective, transmissive, continuous, gap, black mark)
• Ribbon capacity up to 450 meters (longer than many competitors at the time)

The printer is available in thermal transfer (ribbon required) and direct thermal configurations, with various connectivity options (serial/parallel/USB/Ethernet/Wi-Fi) and optional accessories (peel-off, cutter, liner take-up, media hanger).