The RCW directories names for the T4240QDS board conform to the following
naming convention:

ab_cdefghij_klmn:

a = 'R' if RGMII@FM2-DTSEC5 is supported / 'N' if not available/not used
b = 'R' if RGMII@FM1-DTSEC5 or RGMII@FM2-DTSEC6 is supported /
'N' if not available/not used

c = What is available in Slot 1
d = What is available in Slot 2
e = What is available in Slot 3
f = What is available in Slot 4
g = What is available in Slot 5
h = What is available in Slot 6
i = What is available in Slot 7
j = What is available in Slot 8

For the Slots (c..i):
 'N' if not available/not used
 'P' if PCIe
 'X' if XAUI
 'R' if SRIO
 'S' if SGMII
 'H' if SATA
 'F' is XFI
 'A' is AURORA

For the srds_prtcl (k..n):
k = 'dec value of serdes1 protocol value'
l = 'dec value of serdes2 protocol value'
m = 'dec value of serdes3 protocol value'
n = 'dec value of serdes4 protocol value'

So RR_SSFSPRPH_27_55_5_11 means:
 - RGMII@FM2-DTSEC5
 - RGMII@FM2-DTSEC6
 - SGMII on Slot 1
 - SGMII on Slot 2
 - XFI on Slot 3
 - SGMII on Slot 4
 - PCIe on Slot 5
 - SRIO on Slot 6
 - PCIe on Slot 7
 - SATA [Slot 8 not used]