Pay Attention The screw hole spacing of the mounting ears is 29mm, 1.14 inches which can be compatible with product models with corresponding screw hole spacing on the switch. If they are inconsistent, they are not compatible. Compatible for Cisco CK-300RM-19 kit Such as Cisco SF200, SF220, SF250, SF300. SF530, SG200, SG220, SG250, SG300, SG500 and SG550 series small business switches: SRW224G4-AR, SRW224G4, SG300-52P (SG300-52P-K9) SG500XG-8F8T, SG500X-48P, SG300-52MP (SG300-52MP-K9) SG500X-48MP, SG500X-48, SG300-52 (SRW2048-K9) SG500X-24P, SG500X-24MPP, SG300-28SFP (SG300-28SFP-K9) SG500X-24, SG500-52P, SG300-28PP (SG300-28PP-K9) SG500-52MP, SG500-52, SG300-28P (SRW2024P-K9) SG500-28P, SG500-28MPP, SG300-28MP (SG300-28MP-K9) SG500-28, SG355-10P, SG300-28 (SRW2024-K9) SG350XG-48T, SG350XG-2F10, SG300-20 (SRW2016-K9) SG350XG-24T, SG350XG-24F, SF300-48PP (SF300-48PP-K9) SG350X-48P, SG350X-48MP, SF300-48P (SRW248G4P-K9) SG350X-48, SG350X-24P, SF300-48 (SRW248G4-K9) SG350X-24MP, SG350X-24, SF300-24PP (SF300-24PP-K9) SG350-28P, SG350-28MP, SF300-24P (SRW224G4P-K9) SG350-28, SG250-26P, SF300-24MP (SF300-24MP-K9) SG250-26HP, SG250-26, SF300-24 (SRW224G4-K9) SG220-50P, SG220-50, SF250-48HP SG220-28MP, SG220-26P, SF250-48 SG220-26, SG200-50P, SF220-52 SG200-50FP, SG200-50, SF220-48P SG200-26P, SG200-26FP, SF220-48 SG200-26, SG200-18, SF220-24P SG110-24HP, SG110-24, SF220-24 SF500-48P, SF500-48MP, SF200-48P SF500-48, SF500-24P, SF200-48 SF500-24MP, SF500-24, SF200-24P SF350-48P, SF350-48MP, SF200-24FP SF350-48, SF112-24, SF200-24 Other Switches: Please test the size of the switch and compare it with the size of the kit in the main picture 2. Only when they are consistent can they be compatible. See moreThere are many compatible models, please pay attention to the size of the machine. 30-day after-sale services, incompatibility can be returned. Reliable metal materials are selected, which are sturdy and durable, and the installation is firm and not easy to fall. If not sure about the model of the switch, please measure the size of the mounting ears and the hole spacing of the switch, can be used if they match. Please pay special attention to the distance between the screw holes of the switch. The distance between the mounting ears and the holes is 29mm (1.14inch). Including 2 mounting ears, 8 switch screws, 4 sets of cabinet kits (screws + snaps). Compatible for Cisco CK-300RM-19. ***Please confirm the matching size of the kit and switch, Ensure correct size holes***.