Cheatography
https://cheatography.com
A cheat sheet of computer hardware details.
This is a draft cheat sheet. It is a work in progress and is not finished yet.
UTP Categories and Speeds
Category |
Rated For |
MHz |
Cat 5 |
100 Mbps |
100 MHz |
Cat 5e |
100 Mbps |
100 MHz |
Cat 5e |
1 Gbps |
350 MHz |
Cat 6 |
1 Gbps |
250 MHz |
Cat 6a |
10 Gbps |
500 MHz |
Cat 7 |
1 Gbps |
600 MHz |
Cat 7a |
10 Gbps |
1000 MHz |
DDR Pinouts
DDR Standard |
Number of Pins |
DDR1 |
184 pins |
DDR2 |
240 pins |
DDR3 |
240 pins |
DDR4 |
288 pins |
Comparison of SATA 3.0 and 3.2
SATA Standard |
Maximum Data |
Transfer Rate |
Revision 3.0 |
6 Gb/s |
600 MB/s |
Revision 3.2 |
16 Gb/s |
1969 MB/s |
Common Protocols and Ports
Protocol |
Port |
TCP/UDP |
IMAP |
143 |
TCP |
LDAP |
389 |
TCP or UDP |
SMB |
445 |
TCP |
LDAPS |
636 |
TCP |
IMAPS |
993 |
TCP |
RDP |
3389 |
TCP or UDP |
|
|
USB Versions
USB Version |
Name |
Data Transfer Rate |
USB 1.0 |
|
1.5 Mbps |
USB 1.1 |
|
12 Mbps |
USB 2.0 |
High-Speed |
480 Mbps |
USB 3.0 |
SuperSpeed |
5 Gbps |
USB 3.1 |
SuperSpeed+ |
10 Gbps |
USB 3.2 (USB-C) |
SuperSpeed+ |
10/20 Gbps |
Thunderbolt Versions
Version |
Data Transfer Rate |
Connector Type |
PCI Express Version Required |
1 |
10 Gbps |
DisplayPort |
Version 2.0 |
2 |
20 Gbps |
DisplayPort |
Version 2.0 |
3 |
40 Gbps |
USB Type-C |
Version 3.0 |
DVD Technologies
Technology |
Sides |
Total Layers |
Capacity |
DVD-5 |
1 |
1 |
4.7 GB |
DVD-9 |
1 |
2 |
8.5 GB |
DVD-10 |
2 |
2 |
9.4 GB |
DVD-14 |
2 |
3 |
13.2 GB |
DVD-18 |
2 |
4 |
17 GB |
|
