This frame is used for an iRiver iHP-100/iHP-120/iHP-140 CF card modification.
The CF card and CF card adapter is smaller than the old 1.8" HDD. This frame can be used to fill the space and keep the CF card from loosening.
See this blog article about how to refurbish an iRiver iHP player.
Nothing special needs to be observed for the printout.
The printed part does not need to be especially strong or heat-resistant, so you can use almost any filament material. Metallic filament should be avoided though. 😉
The author marked this model as their own original creation.