USB 2.0
The number
of USB 2.0 ports provided in the design of the device.
USB in this case plays the role of a universal interface for connecting peripheral devices to the router. The specific USB devices supported and how they are used may vary. Examples include working with a flash drive that plays the role of a drive for working in FTP or file server mode (see "Functions / Capabilities"), connecting to a printer in
print server mode(see ibid), connecting a 3G modem (See "Data input (WAN-port)"), etc.
Specifically, USB 2.0 allows you to transfer data at speeds up to 480 Mbps. This is noticeably less than that of more advanced standards (starting with USB 3.2 gen1 described below), and the power supply of such connectors is low. However, even such characteristics are often quite enough, taking into account the specifics of the use of Wi-Fi devices. In addition, peripherals for newer versions can also be connected to the USB 2.0 port — the main thing is that the power supply is enough. Therefore, although this standard is considered obsolete, it is still widely used in modern wireless equipment. There are even models that provide
2 or even more USB 2.0 ports; this allows you to simultaneously use several external devices at once — for example, a 3G modem and a USB flash drive.
Antennas (mobile internet)
3G/LTE antennas improve the quality and reliability of signal reception from cell towers, which is especially useful far from base stations. There are such antennas on board models with support for SIM-cards.
Antennas for 3G / LTE are internal and external, there are also pieces of equipment that do not have antennas in the delivery set, but with specially provided antenna connectors.
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Internal. Wi-Fi devices equipped with internal 3G/LTE antennas only. The location inside the case protects the antennas from breakage and damage, while the equipment itself has a neat appearance. On the other hand, the user does not have the opportunity to choose the required antenna for efficiency.
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External. The device has its own external antennas to improve the quality of 3G/LTE reception. Most often, such antennas are a removable part of the structure with connection through the appropriate connectors; however, some models may be equipped with non-removable external antennas, which are foldable for easy transport and storage.
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Connectors for antennas. Separate connectors in the design of the modem for connecting 3G / LTE antennas. Appropriate connectors make it possible to use rather large devices with equipment, which significantly exceed the capabilities of "native" antennas (both internal and external). In addition, the
...user has the right to choose an antenna for such a connector at his discretion.Power consumption
Power consumed by network equipment during operation. Knowing the indicator of energy consumption, you can, for example, calculate the battery life of equipment from an uninterruptible power supply or choose a suitable “uninterruptible power supply”. Also, with the support of PoE technology, it is worth considering the power consumption when choosing a PoE switch or PoE adapter.
