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Congratulations on your purchase of the Antec GX300! Following GX300 is Antec new military style chassis, in addition to continuation GX series of unique, wild, uninhibited, robust style, GX300 exterior design is sturdy and as powerful and dominating as the tough warrior.
Table of Contents Section 1: Introduction Getting to Know Your Chassis................. 5 Chassis Specifications ..................6 Toolkit ......................7 Before You Begin ................... 8 Section 2: Hardware Installation Setting Up ...................... 10 Motherboard Installation ................10 Power Supply Installation ................12 Internal 3.5”...
Getting to Know Your Chassis 1. 6 x 3.5” / 2.5” drive trays 2. 2 x 120 mm top exhaust fan 3. 1 x 120 mm rear exhaust fan (pre-installed) 4. 2 x 120 mm front intake fan 5. 7 expansion slots 6.
Chassis Specifications Chassis Type ATX-Tower Chassis Color Black Dimensions 18.89” (H) x 8.26” (W) x 18.89” (D) 480 mm (H) x 210 mm (W) x 480 mm (D) Weight 11.9 lbs / 5.4 kg Cooling Fan mounts: - 2 x 120 mm top exhaust fan mount - 1 x 120 mm rear exhaust fan mount - 2 x 120 mm front intake fan mount Included Fan:...
Toolkit An inventory of all screws and intended usage and quantity is provided here: A. Front fan screw (8) (6-32x27.5PM) B. HDD screw (24) (6-32x17.5TM) C. Motherboard screw (9) (6-32x6CM) D. Motherboard standoff (1) (6-32x6.35) Power supply screw + VGA (5) (Power +VGA 6-32x6HWM) F.
Before You Begin In order to ensure that your building experience with the GX300 will be a positive one, please take note of the following: While working inside your GX300, keep your chassis on a flat, stable surface. Make sure your build environment is clean, well-lit, and free of dust.
Setting Up Put the case upright on a flat, stable surface so that the side panel is facing you. To remove the left and right side panels, remove these thumbscrews first. Note: Place the panel thumbscrews aside carefully and remember where they are.
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The GX300 comes with nine preinstalled motherboard standoffs. These are positioned for Standard ATX motherboards but can be relocated to accommodate other form factors. 1. Align the motherboard with the standoff holes on the motherboard tray and remember or mark which holes are lined up 2.
4. In case your power supply has a top exhaust fan you can place it upside down because your GX300 has an exhaust place, with dust filter, on the bottom of the enclosure specially for this purpose. (See paragraph 4.4)
Internal 3.5” / 2.5” Device Installation The GX300 has six drive bays that are compatible with both 3.5” and 2.5” drives. To install a 3.5” drive: 1. Remove one of the drive trays by pinching the ends of the tray inward and pulling the drive tray out.
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To install a 2.5” drive: Each of the six 3.5” drive bays also support 2.5” drives 1. Extract one of the drive trays by pinching the ends of the tray inward and pulling the drive tray out. 2. Place your 2.5” drive on the tray so that the holes line up with the 2.5” tray holes. 3.
Cable Management There is a cable management compartment between the motherboard and right side panel, as well as cable tiedowns located on the back of the motherboard panel. You can tuck excess cables in this compartment or route them to the drive bays.
Empty Pin 9 10 USB 3.0 The GX300 comes with one front panel USB 3.0 ports and includes an internal motherboard connector. To access USB 3.0 capability from the front panel: 1. Identify the USB 3.0 header on your motherboard.
HD Audio Ports There is an Intel® 10-pin HDA (High Definition Audio) connector linked to the front panel of the chassis. Signal Names (HDA) MIC2L AGND MIC2R AVCC FRO-R MIC2_JD F_IO_SEN Key (no pin) FRO-L LINE2_JD You can connect the HDA connector, depending on your motherboard. Locate the internal audio connectors from your motherboard or sound card and connect the audio cable.
There may come a time when you need to reconfigure the pin-out of a motherboard header connector. Examples could be for your USB header, audio input header, or some other front panel connector such as the Power Button connector. Before performing any work, please refer to your motherboard user’s manual or your motherboard manufacturer's website to confirm the pin-out needed for your connector.
0.30A 1.32 mm-H 26.5 dBA 3.0W Optional Fans The GX300 includes mounts for up to four more fans. These mounts are as follows: 2 x 120mm front intake fan mounts 2 x 120mm top exhaust fan mounts Front intake 120 mm fans You may need to remove the front panel in order to install fans.
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Top exhaust 120 mm fans The GX300 includes two 120mm top fan mounts 1. Align your fan with the pegs that correspond with the fan screw holes on the fan. 2. Push your fan into the slot until secure. You will hear your fan lock into place when the brackets around the fan snap into place.
Air Filters There are two filters in the GX300 that can be removed and washed. One filter is on the front and the other is the PSU intake filter. You can access the front filter by opening the front panel. The filter is located on rear of front panel.