The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. hero-video Merchant Video A: The standing portion can be setup on either left or right side? Yes, the standing portion can be set up on either the left or the right side. If the L-shaped desk has been properly assembled and is being disassembled and reassembled correctly, then it will also have the same structural integrity as before. B: Can the lift top be extented to different height? The lift top can only be able to extent to one height which is 9.4 inch; you can put the computer monitor stand on the lift top, which can add additional 3.1 inch. The non-lift desktop is 30 inch. Check detailed dimension on the product picture. Q1: Two panels are misaligned A:If the liftable panel (#11) is beyond the position of the fixed panel (#8): Please lift the liftable desktop panel (#11) upwards, loosen the 6 #H (M6x12mm) screws at the bottom of the panel (#11), push the #11 panel forwards to the maximum extent, and tighten the #H screws. Now, #11 and #8 are aligned. Q2: Two panels are misaligned B:If the fixed panel (# 8) is beyond the position of the liftable panel (# 11) Please lift the liftable desktop panel (#11) upwards, loosen the 6 #H (M6x12mm) screws at the bottom of the panel (#11), push the #11 panel backwards to the maximum extent, then tighten the # H screws at the bottom of the panel. Now, aligned. Q3: The two panels are not level in the top-bottom direction Loosen the two # F (M6x50mm) screws at # 25 and # 26 assembly position, use your hand to lift the # 25 upwards and observing the two desktop panels, when the two panels are level, continue to keep holding #25 and tighten #F. Then #11 and #8 are level Bestier 55 inch Office Desk with Drawers Bestier Lift Top L Desk Add to Cart 55 inch Lift Top L Desk Add to Cart 55 inch Lift Top L Desk Add to Cart 59 inch Computer Desk Add to Cart 59 inch Computer Desk Add to Cart 55 inch Computer Desk Add to Cart 55 inch Computer Desk Add to Cart Price $259.99$259.99 $279.99$279.99 $279.99$279.99 $299.99$299.99 $299.99$299.99 $249.99$249.99 $249.99$249.99 With Drawer ✔ ✔ ✔ ✔ ✔ ✔ ✔ With Monitor Stand ✔ ✔ ✔ ✘ ✘ ✘ ✘ Built-in Power Outlet ✘ ✔ ✔ ✘ ✘ ✔ ✔ Assembly Tool ✔ ✔ ✔ ✔ ✔ ✔ ✔ Instruction Included ✔ ✔ ✔ ✔ ✔ ✔ ✔