3.1 Cable Types Flashcards
bit
binary digits
Nibble
4 bits
Byte
8 bits
1000 bits
1 Kilobit
1,000,000 bits
1Mb (megabit)
1,000,000 bytes
1MB (Megabyte)
DB9 Connector
A D-shaped sub miniature pin that goes into the back of a computer and has two thumb screws on the side. Fastest speed is 115kbps
USB ports allow up to how many devices connected?
127 devices, this is known as a daisy chain
USB Host Controller
Uses the same amount of bandwidth for all devices in a port
USB 1.0 (low speed)
Maximum speed of 1.5Mbps
USB 1.1 (full speed)
Maximum speed of 12Mbps
USB 2.0 (hi-speed)
Maximum speed of 400Mbps
USB 3.1 GEN1 (SuperSpeed USB) (Gen 1)
Maximum speed of 5Gbps
USB 3.1 GEN2 (SuperSpeed USB 10Gbps) (Gen 2)
Maximum speed of 10Gbps
SuperSpeed USB 20Gbps (Gen 2x2)
Maximum speed of 20Gbps
USB 4
Maximum speed of 40Gbps
USB cable can deteriorate because?
The longer the cable, the more resistance builds up ion the cable which causes speed and signal to deteriorate
Range limit for USB 1.0?
3 meters (9 feet)
Range limit for USB 1.1?
5 meters (15 feet)
Range limit for USB 2.0?
5 meters (15 feet)
Range limit for USB 3.0?
3 meters (9 feet)
Range limit for USB4?
3 meters (9 feet)
USB 1.0 can provide how much power to a device?
500 milliamps or 0.5 amps
USB 2.0 can provide how much power to a device?
500 milliamps or 0.5 amps
USB 3.0 can provide how much power to a device?
900 milliamps or 0.9 amps
Powered Device Ports can provide how much power to a device?
1500 milliamps or 1.5 amps
USB Type A
Flat rectangular Connector
USB Type A is…
Most commonly used on desktops and laptops
USB Type C
Came out with USB 3.0 and beyond. Connector looks like a small oval
USB Type B
FOund on older models and larger devices, connector looks like a box.
USB MINI B
Often found on early tablets and smartphones
USB MICRO B
Often used on smaller devices(wearables, smart watches)
USB Type B 2.0 VS 3.0
They use different connectors
USB 3.0 Type B Micro connector
Connector looks like a figure 8. Mostly used for portable storage devices
