Ads
related to: 20 port powered usb hub- RS232 to Ethernet
How to transmit serial RS232
data across an IP network.
- Over 40 Years Experience
Perle was founded in 1976.
Learn more about us.
- TrueSerial® Technology
Only Perle provide authentic
serial connections over Ethernet.
- LTE, WiFi or Modem Access
Integrated alternate access
methods when the network is down.
- RS232 to Ethernet
digi.com has been visited by 10K+ users in the past month
Search results
Results From The WOW.Com Content Network
A four-port "long cable" "external box" USB hub A four-port "compact design" USB hub: upstream and downstream ports shown. A USB hub is a device that expands a single Universal Serial Bus (USB) port into several so that there are more ports available to connect devices to a host system, similar to a power strip. All devices connected through a ...
12 V and 24 V powered USB sockets, on an NCR cash register. PoweredUSB, also known as Retail USB, USB PlusPower, USB +Power, and USB Power Plus, [1] is an addition to the Universal Serial Bus standard that allows for higher-power devices to obtain power through their USB host instead of requiring an independent power supply or external AC adapter.
Standard USB hub ports can provide from the typical 500 mA/2.5 W of current, only 100 mA from non-hub ports. USB 3.0 and USB On-The-Go supply 1.8 A/9.0 W (for dedicated battery charging, 1.5 A/7.5 W full bandwidth or 900 mA/4.5 W high bandwidth), while FireWire can in theory supply up to 60 watts of power, although 10 to 20 watts is more typical.
To allow for voltage drops, the voltage at the host port, hub port, and device are specified to be at least 4.75 V, 4.4 V, and 4.35 V respectively by USB 2.0 for low-power devices, [a] but must be at least 4.75 V at all locations for high-power [b] devices (however, high-power devices are required to operate as a low-powered device so that they ...
The VIC-20, for example, used a port expander to allow more than one cartridge to connect to the single ROM cartridge port. A port expander can be any device to which one existing or onboard port becomes two or more - for example: a KVM switch or a USB hub. Such expanders offer the advantage of allowing more devices of a particular port type to ...
USB4 Gen3x2 cable (40 Gbps) with 100 W Power Delivery. Universal Serial Bus 4 (USB4), sometimes erroneously referred to as USB 4.0, is the most recent technical specification of the USB (Universal Serial Bus) data communication standard.