color matte black all pcs models come fully loaded with standard data modules ... under part description page 21 the following are optional inserts available at an ... additional charge data module options for pcs1-pcs3 and pcs7-pcs13 p/n ... bl-bk blank insert $2.00 u2st-bk 2 ea fiber optic st adapter unloaded $2.00 u2sc- ... bk 2 ea fiber optic sc adapter unloaded $2.00 u2att- ... series unloaded $2.00 u1keya-bk single flush mount insert unloaded $2.00 u2keya-bk ... dual flush mount insert unloaded $2.00 1f-bk 1 ea ... f connector $5.00 1tel3mm-bk 1ea 3mm 1/8 ... bnc adapter insert $5.00 2f-bk 2 ea f connector $7.00 145c3u-bk 1 ea cat 3/4 ... /12 $7.00 u1key311-bk 1 ea cat 3 rj11 female $7.00 u1key345-bk 1 ea cat 3 rj45 ... female $7.00 bncf-bk 1 ea bnc 1 ea f connector $7.00 1rca-bk 1 ea rca audio ...