The MICROSENS MS400996M is a 48,3 cm ( 19 inch )-rack switch designed for use in network infrastructures, particularly for connecting fiber optic cables. The device features a total of 28 ports, including 48 1000Base-X/10GBase-R SFP+-ports suitable for connecting single-mode or multi-mode fiber optic cables. Additionally, it includes 2 40G Base-X QSFP+-uplink ports enabling high-speed connections to other switches or core network elements. Power supply is provided by an integrated AC power supply operating in the range of 100 to 240 VAC, connected via a C14 connector. A console port (RJ-45) is also available to allow direct configuration and maintenance of the device via a serial connection.

Applications
This switch is designed for use in medium to large networks, especially in environments requiring high port density and high data transfer rates, such as data centers, enterprise networks, or fiber optic aggregation. The combination of 48 SFP+-ports and 2 QSFP+-ports makes it particularly suitable for backbone connections, where multiple 10G fiber connections are aggregated and connected to a higher network segment via a 40G or 100G uplink. Its 48,3 cm ( 19 inch )-rack switch form factor allows for easy installation in standard racks.

Features and Specifications in Detail
The device features redundant power supply, meaning two independent power supply units are integrated to maintain network connectivity in case one unit fails. This increases the switch's availability in critical applications. The 48 SFP+-ports support both 1000Base-X (Gigabit Ethernet over fiber) and 10GBase-R (10 Gigabit Ethernet over fiber), allowing flexible use depending on existing infrastructure. The 2 QSFP+-ports are designed for 40G connections and can be operated with appropriate QSFP+ transceivers.

Technology Explained Simply
The term 1000Base-X refers to Gigabit Ethernet transmission over fiber optic cable, where X" stands for different variants such as SX, LX, EX, depending on range and fiber type. 10GBase-R refers to 10-Gigabit Ethernet transmission over fiber optic cable, with "R" standing for "Routed", indicating the use of SFP+ modules. The QSFP+-ports support 40G connections, with the designation "Base-X indicating the use of SFP+ modules for 40G connections. The integrated AC power supply operating in the range of 100 to 240 VAC allows use in various countries without an adapter. The console port (RJ-45) is used for local configuration and maintenance via a serial connection, e.g., with a terminal adapter.

The redundant power supply ensures increased operational reliability, as in the event of a failure of one power supply unit, the other continues to maintain operation. This is particularly important in critical networks where connection interruptions must be avoided.

Compatibility and Accessories
The switch is compatible with SFP+ transceivers designed for 1000Base-X or 10GBase-R, as well as QSFP+ transceivers for 40G connections. Specific model numbers of transceivers are not specified; however, the ports are standard-compliant, allowing the use of compatible modules from various manufacturers. No specific accessories are included in the delivery scope; the described transceivers are not part of the package.

Installation and Mounting
The switch is designed as a 48,3 cm ( 19 inch )-rack switch, meaning it can be mounted in standard 48,3 cm ( 19 inch ) racks. Mounting is done using integrated mounting holes or mounting rails designed for rack installation. Power supply is via a C14 connector, which is connected to a suitable power outlet. Configuration is done via the console port or network protocols, although the exact configuration method is not specified.

Operational Advantages
The redundant power supply increases operational reliability and minimizes downtime. The high port density with 48 SFP+-ports and 2 QSFP+-ports enables efficient rack utilization and reduces the number of required devices. Support for 10GBase-R and 1000Base-X via SFP+-ports offers flexibility in choosing the transmission technology based on existing infrastructure. The integrated AC power supply with a wide voltage range of 100 to 240 VAC enables worldwide use without additional adapters. The console port (RJ-45) provides a secure method for local configuration, especially during initial setup or maintenance work.