ebay 131132034753
micro-sd, no regular, with voltage converter
or regular sd without the voltage converter
111318718028
word of caution. not all SD sleeves can be soldered with a hot iron. some have the connectors burred under the housing and need more delicate attention
also, some have a switch to signal when a card is installed
some have a push-in, pop out mechanism.
most you see for $1.00 are totally manual. you push in and you pull out.
the link was to a push in-pop out, much more mechanical than the manual ones.