1

Power button/Power light

7

Drive activity light

2

SD card slot

8

USB 3.1 Gen 1 ports

3

USB 3.1 Gen 1 Type-C port with PowerShare

9

USB 3.1 Gen 1 Type-C port

10

Headset port

4

5.25 inch bay(optional)

5

Slimeline optical drive

6

Drive access release latch

11

Drive carriers

12

Microphone/Line-in port

14

PS/2 Mouse port

16

USB 3.1 Gen 1 ports

17

Discrete graphics card slot(optional)

19

Padlock ring

20

Security cable slot

18

Power cable connector

21

Line-out port

13

Serial port

22

PS/2 Keyboard port

15

Network port

23

USB 3.1 Gen 1 port(supports smart Power-On)

24

Expansion card slots