- IT Support
IT Support Trends for 2026: What SMEs Should Prepare For
22 Mar, 2026
£190.25 inc. VAT
AI-generated summary
At ~£152.68 ex-VAT for a 3m 100G DAC/QSFP28 link, this is the kind of cable you buy when you want predictable performance and you don’t want the hassle of negotiating optics compatibility. Direct-attach copper like this is usually a no-drama choice for short rack-to-rack runs (same row, same cabinet, or within a small structured cabling zone). If you’re building an interconnect that’s already been validated with your switch platform family (the models it mentions), it tends to “just work” and saves you power, cost, and cooling compared with pluggable optics.
I’d buy this if you’re standardising on known-good HPE/Arista/Cisco/QFX-style port modules in that ecosystem and you’re comfortable that 3m is the distance you need. I’d think twice if you’re not sure about port/feature compatibility, if you need longer reach, or if you’ve got mixed-vendor kit—DACs can be picky about what they’ll train with. Also, if you’re doing this at scale, check lead time and whether you’re paying a premium versus generic DACs that your exact switch tolerates; for most 100G short links, the “smart buy” is the one that your specific hardware confirms will work reliably, not just the one that’s listed by name.

STARTECH
StarTech.com Cisco GLC-TE Compatible Module, 1000BASE-T Copper Industrial Gigabit Ethernet Transceiver, SFP to RJ45 Cat6/Cat5e 100m Extended Temp, Cisco Firepower, IE 2000, C9500, C2960 - Lifetime Warranty (GLCTEST) - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-TE) - 1GbE - 1000Base-T - RJ-45 - up to 100 m

STARTECH
StarTech.com MSA-Compliant SFP-25G-LR-S SFP28 Module, 25Gbps Single Mode Fiber (SMF), 10km (6.2mi), LC Connector, 1310nm, MSA 25 Gigabit Optical Transceiver - SFP28 transceiver module - 25GbE - 25GBase-LR - LC single-mode - up to 10 km - 1310 nm

STARTECH
StarTech.com 10 pack HPE J4858C Compatible SFP Module, 1000BASE-SX, 1GbE Multi Mode (MMF) Fiber Optic Transceiver, 1 Gigabit Ethernet SFP, LC Connector, 550m, 850nm, DDM, HPE 1400, 1700, 1820 - Lifetime Warranty (J4858C10PKST) - SFP (mini-GBIC) transceiver module (equivalent to: HP J4858C) - 1GbE - 1000Base-SX - LC multi-mode - up to 550 m - 850 nm (pack of 10) - for HPE 1700, 2610, 6120, Switch XL 10/100/1000, HPE Aruba 2530, 2930F 24, 2930F 48, 5406

STARTECH
StarTech.com 10 pack HPE J4859C Compatible SFP Module, 1000BASE-LX, 1GbE Single Mode SMF/MMF Optic Transceiver, 1 Gigabit Ethernet, LC Connector 10km, 1310nm DDM, HPE 1400 1700, Mini GBIC - Lifetime Warranty (J4859C10PKST) - SFP (mini-GBIC) transceiver module (equivalent to: HP J4859C) - 1GbE - 1000Base-LX - LC - up to 10 km - 1310 nm (pack of 10) - for HPE 1700, 2610, 93XX, Switch XL 10/100/1000, HPE Aruba 2530, 2930F 24, 2930F 48, 5406