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3R System

3R System L900

The 3R System L900 conforms to the ATX form factor and so can accommodate motherboards with form factors ATX and Micro-ATX.

Its dimensions (LxWxH) are 505mm x 220mm x 458mm.

5.8

3R System L900

help iconForm FactorATXhelp iconHeight458mm
help iconMotherboard Form Factors
  • ATX
  • Micro-ATX
help iconMaximum Graphics Card Length280mm
help iconMaterialNot surehelp iconFront Fans1
help iconColorBlackhelp iconFront Fans Size120mm
help iconExpansion Slots7help iconRear Fans1
help icon5.25″ Drive Bays3help iconRear Fans Size120mm
help icon3.5″ Drive Bays4help iconIO Display Panelyes
help icon2.5" Drive Bays0help iconFront USB 2.0 Slots4
help iconTool-less Railsnohelp iconFront USB 3.0 Slots0
help iconLength505mmhelp iconeSATAyes
help iconWidth220mmhelp iconAudio IOyes

3R System L900 compatibility review

The 3R System L900 has a the ATX form factor. ATX is the most ubiquitous of case standards, providing the largest array of compatible hardware on the market. Using the ATX standard, the case can house motherboards and power supplies with form factors ATX and Micro-ATX. The dimensions of the case itself (LxWxH) are 505mm x 220mm x 458mm.

The 3R System L900 has seven expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has three 5.25" drive bays, which is enough to house an optical drive and a couple of hard drives, while still having a couple of extra free hard drives with the four 3.5" drive bays that are also available. To mount an SSD you would require an adapter, however, as there are no 2.5" drive bays.

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