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.