HP ProCurve J4858B (X121 1G SFP LC SX) Transceiver
- Brand: HP
- Product Code: J4858B
- Availability: In Stock
Professional SFP transceiver for Gigabit data transmission over multimode optical fiber. This module is the "workhorse" for older HP ProCurve switch series and is fully compatible with standard LC multimode patch cables.
Key features:
Interface type: 1000BASE-SX Gigabit Ethernet.
Wavelength: 850 nm.
Fiber type: Multimode (MMF) 50/125 µm or 62.5/125 µm.
Connector: Duplex LC.
Distance: Up to 550 meters (OM2) or 220–275 meters (OM1).
Compatibility: Optimized for the HP ProCurve 2500, 2600, 2800, 4100, and 6108 series.
The difference between J4858B and J4858C:
The main difference is in DOM/DDM (Digital Monitoring and Diagnostic) support. Version B typically does not support real-time monitoring of temperature and signal levels via the switch software, whereas version C does.