A telecommunications device fixation assembly (4000/4300) comprising: a bracket (4002/4302/4402) configured to be mounted to a telecommunications fixture, the bracket (4002/4302/4402) defining at least one planar wall (4008/4308/4408); and a device holder (4004/4104/4204/4304) configured to be removably mounted to the bracket (4002/4302/4402), the device holder (4004/4104/4304) defining a device holding portion (4022/4322) and a fixation portion (4020/4320), wherein the fixation portion (4020/4320) defines at least one pocket (4040/4340) configured to receive an edge (4042/4044/4048) of the planar wall (4008/4308/4408) of the bracket (4002/4302/4402), the fixation portion (4020/4320) further including an elastically flexible latch (4046/4146/4246) configured to snap fit to a portion of the planar wall (4008/4308/4408) of the bracket (4002/4302/4402) to fix the device holder (4004/4104/4204/4304) to the bracket (4002/4302/4402), wherein the device holding portion (4022/4322) of the device holder (4004/4104/4204/4304) is configured to hold a cable fan-out and includes a curved profile (4024/4324) that is configured to accommodate a curved profile of a jacket of the cable fan-out, wherein the device holding portion (4022/4322) of the device holder (4004/4104/4204/4304) further defines an opening (4028/4328) for receiving a cable-tie for securing the jacket of the cable fan-out against the device holding portion (4022/4322) with the curved profile (4024/4324), wherein the cable tie can be looped through the opening (4028/4328) and wrapped around the cable fan-out to be mounted to the device holder (4004/4104/4204/4304). a bracket (4002/4302/4402) configured to be mounted to a telecommunications fixture, the bracket (4002/4302/4402) defining at least one planar wall (4008/4308/4408); and a device holder (4004/4104/4204/4304) configured to be removably mounted to the bracket (4002/4302/4402), the device holder (4004/4104/4304) defining a device holding portion (4022/4322) and a fixation portion (4020/4320), wherein the fixation portion (4020/4320) defines at least one pocket (4040/4340) configured to receive an edge (4042/4044/4048) of the planar wall (4008/4308/4408) of the bracket (4002/4302/4402), the fixation portion (4020/4320) further including an elastically flexible latch (4046/4146/4246) configured to snap fit to a portion of the planar wall (4008/4308/4408) of the bracket (4002/4302/4402) to fix the device holder (4004/4104/4204/4304) to the bracket (4002/4302/4402), wherein the device holding portion (4022/4322) of the device holder (4004/4104/4204/4304) is configured to hold a cable fan-out and includes a curved profile (4024/4324) that is configured to accommodate a curved profile of a jacket of the cable fan-out, wherein the device holding portion (4022/4322) of the device holder (4004/4104/4204/4304) further defines an opening (4028/4328) for receiving a cable-tie for securing the jacket of the cable fan-out against the device holding portion (4022/4322) with the curved profile (4024/4324), wherein the cable tie can be looped through the opening (4028/4328) and wrapped around the cable fan-out to be mounted to the device holder (4004/4104/4204/4304).