The PD05-KA model includes a 1Gb Fiber SFP module part number - SI8512-X5ATOS by SANOC
https://www.sanoc.com.tw/spec/si_series/06-si8512-x5ato.pdf
For PD05-K1 models, the SFP included is a 100Mbps SFP part number - SI3015-02ATO by SANOC
https://www.sanoc.com.tw/spec/si_series/01-si3015-02ato.pdf
For PD05-KR models, the SFP included is a Copper-based SFP part number - LCP-1250RJ3SRT by Delta
https://www.delta.com.tw/product/cp/fot/download/pdf/lcp-1250rj3sr%20spec%20rev1.01%202006-12-18.pdf