The reason why the graphics card can be removed and fixed from falling off more conveniently is that the slot comes with a fixed buckle. Riser card makes the power supply of the graphics card more stable and safe due to the use of anti-burn chip. Using 12 LED marquee lights, the current flow is clearly visible. It is made of high-quality EVA and electronic components. The length of the product is 137mm and the width is 44mm. The riser card supports all for Windows Systems, for Linux, for Mac systems. With the help of it, the burden of the motherboard can be reduced. Item Name: Riser Card Material: EVA, Electronic Components Model: V011PRO Interface: PCI-E 1X, PCI-E 16X Support System: Compatible with All for Windows Systems, for Linux, for Mac Features: Fast Speed, LED Marquee, Stable Power Supply Size Details: 13.7cm x 4.4cm/5.39" x 1.73" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x PCI-E 16X Riser Card 1 x PCI-E 1X Riser Card 1 x Power Cable 1 x USB Cable