![background image](http://html.mh-extra.com/html/benq/ht2550/ht2550_user-manual_2734552008.webp)
8 Introduction
Projector exterior view
1. Lamp cover
2. Vent (air exhaust)
3. Adjuster feet
4. Projection lens
5. IR remote sensor
6. Lens cover
7. External control panel
(See
Controls and functions on page 9
8. Focus and Zoom rings
9. Vent (air inlet)
10. Audio input jack
Audio output jack
11. RGB (PC) signal input jack
12. HDMI input port (Version 2.0)
13. HDMI input port (Version 1.4a)
14. USB Mini-B port (for firmware upgrades)
15. RS-232 control port
16. USB Type-A port (1.5 A power supply)
17. 12V DC output terminal
Triggers external devices such as an electric
screen or light control, etc.
18. AC power jack
19. Kensington anti-theft lock slot
20. Ceiling mount holes
8
7
18
3
20
3
3
9
3
3
6
5
4
20
20
3
3
3
20
20
20
19
1
2
11 12 1314 15 16 17
10