Description
Introduction
QSFP28 (Quad Small Form-factor Pluggable 28) is a type of cable commonly used in high-speed networking applications such as data centres, storage area networks (SANs), and high-performance computing (HPC). It is designed to transmit data at rates of up to 100 Gbps (gigabits per second) and is a compact and hot-pluggable interface.
The QSFP28 cable has 4 lanes, each capable of carrying data at 25 Gbps, for a total of 100 Gbps. It uses a smaller form factor than its predecessor, QSFP+, which means that it can support higher port densities and requires less space in data centre racks. They are also used to connect switches, routers, servers, and other networking equipment and are a key component in building high-speed, low-latency data centre networks.
Specifications
- Data Rate: QSFP28 cables support data rates of up to 100 Gbps, with each lane operating at 25 Gbps.
- Connector Type: The QSFP28 connector is a hot-pluggable transceiver with a 38-pin edge connector that connects to the network device.
- Cable Type: QSFP28 cables can use either fiber optic or copper cable, with different lengths and types available depending on the specific application.
- Distance: The maximum distance that a QSFP28 cable can transmit data depends on the cable type and the data rate. For example, a 100G QSFP28 optical cable can transmit data up to 100 meters over OM4 multimode fiber or up to 10 km over single-mode fiber.
- Power Consumption: QSFP28 cables typically consume less than 3.5 watts of power, making them energy-efficient and suitable for high-density data centre environments.
- Overall, QSFP28 cables are designed to provide high-speed, low-latency connectivity between network devices, with a small form factor and low power consumption.