I. SFP Module

SFP (Small Form-factor Pluggable) module is one of the most commonly used optical modules, and its size standard is set by the SFF (Small Form-Factor) committee. Common SFP module dimensions are 56.5mm x 13.7mm x 8.5mm, where 13.7mm is the width of the module, 8.5mm is the height, and 56.5mm is the length. In the process of use, it is also necessary to pay attention to the cable specifications in the SFP interface, such as 1000BASE-T (RJ-45 interface), 1000BASE-SX (LC interface) and so on.

Second, SFP + module

SFP+ (Enhanced Small Form-factor Pluggable) module is a further upgrade of the SFP module, the size of the standard developed by the SFF-8431 Committee. SFP+ module size 56.5mm × 13.7mm × 8.5mm, the same as the SFP module, but its interface speed is higher (up to 10Gbps).

QSFP Module

QSFP (Quad Small Form-factor Pluggable) module is a small high-density optical module to support 4-way transmission, the size of the standard developed by the SFF-8436 Committee. QSFP module size of 70.0mm × 18.4mm × 14.2mm, of which 18.4mm for the width of the module, 14.2mm for the height, 70.0mm for the length. and 70.0mm is the length. Compared with SFP, SFP + module, QSFP module transmission rate is faster, up to 40Gbps.

QSFP+ Module

QSFP+ (Enhanced Quad Small Form-factor Pluggable) module is a further upgrade of the QSFP module, the size of the standard set by the SFF-8436 Committee. QSFP+ module size of 70.0mm × 18.4mm × 14.2mm, the same as the QSFP module, but its interface speed is higher (up to 40Gbps or 100Gbps). up to 40Gbps or 100Gbps).

V. CFP Module

CFP (C Form-factor Pluggable) module is a large optical module, the size of the standard developed by the MSA (Multi-Source Agreement) organization. 144.75mm × 82mm × 13.46mm CFP module dimensions, of which 82mm for the width of the module, 13.46mm for the height of 144.75mm for the length. CFP module is usually used for high-speed data transmission, up to 100Gbps.

CFP2 and CFP4 Modules

CFP2 module and CFP4 module is a further upgrade of the CFP module, the size of the standard is also developed by the MSA organization. CFP2 module dimensions of 87mm × 31.25mm × 6.35mm, CFP4 module dimensions of 68.91mm × 18.23mm × 3.305mm. the two dimensions are smaller than the CFP module, but the transmission rate is higher.

What is a QSFP Port?

QSFP, or quad small form factor pluggable, is another type of compact, hot-swappable transceiver. It supports Ethernet, Fibre Channel, InfiniBand and SONET/SDH standards with different data rate options. QSFP modules are commonly available in several different types: 4x1Gbps QSFP, 4x10Gbps QSFP+, 4x28Gbps QSFP28.

QSFP+ and QSFP28 are the most recent versions, which support numerous 40Gbps and 100Gbps applications. Both QSFP+ and QSFP28 modules integrate 4 transmit and 4 receiver channels. While QSFP+ supports 4x10Gbps or 1x40Gbps, QSFP28 can do 4x25Gbps, 2x50Gbps or 1x100Gbps, depending on the transceiver used. The specifications for QSFP are based on SFF-8436.