4 External USB 3.0 ports 2 front, 2 rear and 6 External USB 2.0 ports 2 front, 4 rear, VGA, DP, 2 L/I, 2 L/O 3
4 External USB 3.0 ports 2 front, 2 rear and 6 External USB 2.0 ports 2 front, 4 rear, VGA, Serial, DP, RJ-45, 2 L/I, 2 L/O, PS/2 2
8 USB 2.0 4 front, 4 rear, HDMI, VGA, Audio I/O front/rear 1
10 External USB - 6 x USB 3.1 Gen 1 1 USB Type-C for data only and 1 Type-A front/4 Type-A rear and 4 x USB 2.0 2 Type-A front/2 Type-A rear - 1 front with PowerShare; 4 Internal USB 2.0; 1 RJ-45; 1 Serial; 2 Display Port 1.2; 1 HDMI 1.4; 1
Front: One 1 USB 2.0,One 1 USB 3.0 Audio I/O Rear: Four4 USB 2.0, Three 3 USB 2.0, One 1 USB 3.0, DP, VGA, RJ-45, Audio I/O, 1
Front: Two 2 USB 2.0, Audio I/O, Rear: Six 6 USB 2.0, VGA, HDMI, RJ-45, Audio I/O 1
Front: Two 2 USB 2.0, Two 2 USB 3.0, Audio I/O, Internal: Two 2 USB 2.0, Exterrnal: Two 2 USB 3.0, Four 4 USB 2.0, VGA, Two 2 DP, RJ-45, Serial, Two 2 PS/2 12
Front: Two2 USB 3.0, Two 2 USB 2.0 , One 1 Lineout, Rear: Two 2 USB 2.0, Four 4 USB 3.0, Two 2 DP, HDMI, Serial, RJ-45, Audio I/O, PS/2 8
Front: Two2 USB 3.0, Two 2 USB 2.0 , Rear: Four 4 USB 2.0, Two 2 DP, VGA, Serial, RJ-45, Audio I/O, PS/2 2
Front: Two 2 USB 3.0, Two 2 USB 2.0 Audio I/O, Rear: Two 2 USB 3.0, Four 4 USB 2.0, VGA, Two 2 DP, RJ-45, Serial, Two 2 PS/2, Audio I/O 2
Front: Two 2 USB 3.0,Two 2 USB 2.0, Audio I/O, Rear: Four 4 USB 2.0, Two 2 USB 2.0, Two 2 DP, VGA, Serial, RJ-45, Audio I/O, Two 2 PS/2 2
Front: Two 2 USB 3.0, Two 2 USB 2.0, Audio I/O Rear: Two 2 USB 3.0, Two2 USB 2.0, Two 2 DP, VGA, RJ-45, Serial, Αudio Ι/Ο, Two 2 PS/2 1
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB, Serial, DP, VGA,RJ-45, Stereo L/I, Speakers L/O 1
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB, Serial, VGA, DP, Stereo line in, Speakers line out, PS/2 2
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB, Stereo L/I, Speakers L/O 1
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB, VGA, Serial, DP, RJ-45, PS/2 Stereo L/I, Speakers L/O 1
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB,VGA,Serial, DP, Stereo line in, Speakers line out, PS/2 4
Front: Four 4 USB, microphone, headphone, Rear: Six 6 USB, VGA, Serial, Two 2 DP, Audio I/O, PS/2 4
Front: Four 4 USB 2.0 , Audio I/O Rear: Six 6 USB 2.0, VGA, DP, RJ-45, Serial, Audio I/O 3
Front: Two 2 USB, microphone, headphone, Rear: Six 6 USB, VGA, HDMI, RJ45, Stereo L/I, Speakers L/O 4
Front: Two 2 USB 2.0, Audio I/O, Rear: Six 6 USB 2.0, RJ-45, VGA, HDMI, Audio I/O 2
Front: Two 2 USB 2.0, Audio I/O, Rear: Six 6 USB 2.0, VGA, HDMI, RJ-45, Audio I/O 1
Front: Two 2 USB 2.0, microphone, headphone - Rear: Six 6 USB 2.0, VGA, HDMI, RJ-45, Stereo L/I, Speakers L/O, Microphone L/O 1
Front: Two 2 USB 3.0, Two 2 USB 2.0, microphone, headphone, Rear: Two 2 USB 3.0, Two 2 USB 2.0, HDMI, DP, UAJ,RJ-45, Stereo L/I, Speakers L/O 3
Front: Two 2 USB 3.1, Two 2 USB 2.0, microphone, headphone, Rear: Two 2 USB 3.1, Two 2 USB 2.0, HDMI, DisplayPort, UAJ,RJ-45, Stereo L/I, Speakers L/O 4
Side: Two 2 USB 2.0, 1 Media-card reader, Audio I, Rear: Four 4 USB 3.0, Two 2 USB 2.0, RJ-45, HDMI, DP, Audio I/O port 2
Side: Two 2 USB 3.0, Audio I/O, Rear: Four 4 USB 2.0, Serial, RJ-45, Serial, Audio I/O 1
Side: Two 2 USB 3.0, Audio I/O, Rear: Two 2 USB 3.0, Four 4 USB 2.0, RJ-45, VGA, Audio I/O 5
